255565415 has 16 divisors (see below), whose sum is σ = 354107712. Its totient is φ = 173435904.

The previous prime is 255565399. The next prime is 255565421. The reversal of 255565415 is 514565552.

It is a cyclic number.

It is not a de Polignac number, because 255565415 - 2⁴ = 255565399 is a prime.

It is a super-5 number, since 5×255565415⁵ (a number of 43 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34244 + ... + 41033.

It is an arithmetic number, because the mean of its divisors is an integer number (22131732).

Almost surely, 2^255565415 is an apocalyptic number.

255565415 is a deficient number, since it is larger than the sum of its proper divisors (98542297).

255565415 is an equidigital number, since it uses as much as digits as its factorization.

255565415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75386.

The product of its digits is 150000, while the sum is 38.

The square root of 255565415 is about 15986.4134501770. The cubic root of 255565415 is about 634.6009148376.

The spelling of 255565415 in words is "two hundred fifty-five million, five hundred sixty-five thousand, four hundred fifteen".