255872497 has 4 divisors (see below), whose sum is σ = 258356800. Its totient is φ = 253388196.

The previous prime is 255872479. The next prime is 255872503. The reversal of 255872497 is 794278552.

255872497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255872497 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 255872497.

It is not an unprimeable number, because it can be changed into a prime (255272497) 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, 1241997 + ... + 1242202.

It is an arithmetic number, because the mean of its divisors is an integer number (64589200).

Almost surely, 2^255872497 is an apocalyptic number.

It is an amenable number.

255872497 is a deficient number, since it is larger than the sum of its proper divisors (2484303).

255872497 is a wasteful number, since it uses less digits than its factorization.

255872497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484302.

The product of its digits is 1411200, while the sum is 49.

The square root of 255872497 is about 15996.0150350017. The cubic root of 255872497 is about 634.8549874499.

The spelling of 255872497 in words is "two hundred fifty-five million, eight hundred seventy-two thousand, four hundred ninety-seven".