255568403 has 2 divisors, whose sum is σ = 255568404. Its totient is φ = 255568402.

The previous prime is 255568399. The next prime is 255568459. The reversal of 255568403 is 304865552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255568403 - 2² = 255568399 is a prime.

It is a super-2 number, since 2×255568403² = 130630417223940818, which contains 22 as substring.

It is equal to p_13967183 and since 255568403 and 13967183 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (255568003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127784201 + 127784202.

It is an arithmetic number, because the mean of its divisors is an integer number (127784202).

Almost surely, 2^255568403 is an apocalyptic number.

255568403 is a deficient number, since it is larger than the sum of its proper divisors (1).

255568403 is an equidigital number, since it uses as much as digits as its factorization.

255568403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 255568403 is about 15986.5069042615. The cubic root of 255568403 is about 634.6033880206.

The spelling of 255568403 in words is "two hundred fifty-five million, five hundred sixty-eight thousand, four hundred three".