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30060561 = 310020187
BaseRepresentation
bin111001010101…
…1000000010001
32002120020100010
41302223000101
530143414221
62552145133
7513340056
oct162530021
962506303
1030060561
1115a71a43
12a0981a9
1362c671b
143dc702d
15298bc76
hex1cab011

30060561 has 4 divisors (see below), whose sum is σ = 40080752. Its totient is φ = 20040372.

The previous prime is 30060533. The next prime is 30060571. The reversal of 30060561 is 16506003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30060561 - 213 = 30052369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30060571) 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, 5010091 + ... + 5010096.

It is an arithmetic number, because the mean of its divisors is an integer number (10020188).

Almost surely, 230060561 is an apocalyptic number.

It is an amenable number.

30060561 is a deficient number, since it is larger than the sum of its proper divisors (10020191).

30060561 is a wasteful number, since it uses less digits than its factorization.

30060561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020190.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 30060561 is about 5482.7512254342. The cubic root of 30060561 is about 310.9321957345.

Adding to 30060561 its reverse (16506003), we get a palindrome (46566564).

The spelling of 30060561 in words is "thirty million, sixty thousand, five hundred sixty-one".

Divisors: 1 3 10020187 30060561