255013561 has 8 divisors (see below), whose sum is σ = 278935200. Its totient is φ = 231215040.

The previous prime is 255013553. The next prime is 255013579. The reversal of 255013561 is 165310552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255013561 - 2³ = 255013553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255013511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26416 + ... + 34753.

It is an arithmetic number, because the mean of its divisors is an integer number (34866900).

Almost surely, 2^255013561 is an apocalyptic number.

It is an amenable number.

255013561 is a deficient number, since it is larger than the sum of its proper divisors (23921639).

255013561 is a wasteful number, since it uses less digits than its factorization.

255013561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61559.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 255013561 is about 15969.1440284068. The cubic root of 255013561 is about 634.1438114788.

The spelling of 255013561 in words is "two hundred fifty-five million, thirteen thousand, five hundred sixty-one".