255042561 has 8 divisors (see below), whose sum is σ = 354841920. Its totient is φ = 162635792.

The previous prime is 255042553. The next prime is 255042563. The reversal of 255042561 is 165240552.

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 255042561 - 2³ = 255042553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255042563) 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, 1848066 + ... + 1848203.

It is an arithmetic number, because the mean of its divisors is an integer number (44355240).

Almost surely, 2^255042561 is an apocalyptic number.

It is an amenable number.

255042561 is a deficient number, since it is larger than the sum of its proper divisors (99799359).

255042561 is a wasteful number, since it uses less digits than its factorization.

255042561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696295.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 255042561 is about 15970.0520036724. The cubic root of 255042561 is about 634.1678487279.

The spelling of 255042561 in words is "two hundred fifty-five million, forty-two thousand, five hundred sixty-one".