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30377051 = 69143961
BaseRepresentation
bin111001111100…
…0010001011011
32010011022110222
41303320101123
530234031201
63003030255
7516125555
oct163702133
963138428
1030377051
1116168801
12a20b38b
1363a77b3
14406a4d5
152a0091b
hex1cf845b

30377051 has 4 divisors (see below), whose sum is σ = 30421704. Its totient is φ = 30332400.

The previous prime is 30377033. The next prime is 30377057. The reversal of 30377051 is 15077303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15077303 = 29519907.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30377051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30377051.

It is not an unprimeable number, because it can be changed into a prime (30377057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21290 + ... + 22671.

It is an arithmetic number, because the mean of its divisors is an integer number (7605426).

Almost surely, 230377051 is an apocalyptic number.

30377051 is a deficient number, since it is larger than the sum of its proper divisors (44653).

30377051 is an equidigital number, since it uses as much as digits as its factorization.

30377051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44652.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 30377051 is about 5511.5379886199. The cubic root of 30377051 is about 312.0195959366.

The spelling of 30377051 in words is "thirty million, three hundred seventy-seven thousand, fifty-one".

Divisors: 1 691 43961 30377051