255607403 has 4 divisors (see below), whose sum is σ = 255672048. Its totient is φ = 255542760.

The previous prime is 255607397. The next prime is 255607409. The reversal of 255607403 is 304706552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (255607397) and next prime (255607409).

It is a cyclic number.

It is not a de Polignac number, because 255607403 - 2²⁴ = 238830187 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 255607403.

It is not an unprimeable number, because it can be changed into a prime (255607409) 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, 25976 + ... + 34437.

It is an arithmetic number, because the mean of its divisors is an integer number (63918012).

Almost surely, 2^255607403 is an apocalyptic number.

255607403 is a deficient number, since it is larger than the sum of its proper divisors (64645).

255607403 is an equidigital number, since it uses as much as digits as its factorization.

255607403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64644.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 255607403 is about 15987.7266363921. The cubic root of 255607403 is about 634.6356667544.

The spelling of 255607403 in words is "two hundred fifty-five million, six hundred seven thousand, four hundred three".