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30601514557 = 37827067961
BaseRepresentation
bin11100011111111111…
…100000111000111101
32220222200011000020001
4130133333200320331
51000132441431212
622020320354301
72132222403415
oct343777407075
986880130201
1030601514557
1111a838368a9
125b20475991
132b68ba1183
1416a42a7645
15be1845657
hex71ffe0e3d

30601514557 has 4 divisors (see below), whose sum is σ = 31428582556. Its totient is φ = 29774446560.

The previous prime is 30601514533. The next prime is 30601514563. The reversal of 30601514557 is 75541510603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25930338841 + 4671175716 = 161029^2 + 68346^2 .

It is a cyclic number.

It is not a de Polignac number, because 30601514557 - 215 = 30601481789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 827067961 = 30601514557 / (3 + 0 + 6 + 0 + 1 + 5 + 1 + 4 + 5 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30601514597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413533944 + ... + 413534017.

It is an arithmetic number, because the mean of its divisors is an integer number (7857145639).

Almost surely, 230601514557 is an apocalyptic number.

30601514557 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30601514557 is a deficient number, since it is larger than the sum of its proper divisors (827067999).

30601514557 is an equidigital number, since it uses as much as digits as its factorization.

30601514557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827067998.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 30601514557 in words is "thirty billion, six hundred one million, five hundred fourteen thousand, five hundred fifty-seven".

Divisors: 1 37 827067961 30601514557