15255565 has 32 divisors (see below), whose sum is σ = 20837376. Its totient is φ = 10644480.

The previous prime is 15255547. The next prime is 15255587. The reversal of 15255565 is 56555251.

It is not a de Polignac number, because 15255565 - 2⁷ = 15255437 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 15255565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134949 + ... + 135061.

It is an arithmetic number, because the mean of its divisors is an integer number (651168).

Almost surely, 2^15255565 is an apocalyptic number.

It is an amenable number.

15255565 is a deficient number, since it is larger than the sum of its proper divisors (5581811).

15255565 is a wasteful number, since it uses less digits than its factorization.

15255565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its digits is 37500, while the sum is 34.

The square root of 15255565 is about 3905.8372981987. The cubic root of 15255565 is about 248.0139441084.

The spelling of 15255565 in words is "fifteen million, two hundred fifty-five thousand, five hundred sixty-five".