55615525 has 24 divisors (see below), whose sum is σ = 79260800. Its totient is φ = 37920960.

The previous prime is 55615513. The next prime is 55615537. The reversal of 55615525 is 52551655.

It is an interprime number because it is at equal distance from previous prime (55615513) and next prime (55615537).

It is not a de Polignac number, because 55615525 - 2⁵ = 55615493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34027 + ... + 35623.

Almost surely, 2^55615525 is an apocalyptic number.

It is an amenable number.

55615525 is a deficient number, since it is larger than the sum of its proper divisors (23645275).

55615525 is a wasteful number, since it uses less digits than its factorization.

55615525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1808 counting only the distinct ones).

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

The square root of 55615525 is about 7457.5817125929. The cubic root of 55615525 is about 381.7086605671.

The spelling of 55615525 in words is "fifty-five million, six hundred fifteen thousand, five hundred twenty-five".