55503315 has 24 divisors (see below), whose sum is σ = 109950048. Its totient is φ = 25372800.

The previous prime is 55503311. The next prime is 55503319. The reversal of 55503315 is 51330555.

It is an interprime number because it is at equal distance from previous prime (55503311) and next prime (55503319).

It is not a de Polignac number, because 55503315 - 2² = 55503311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55503311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87786 + ... + 88415.

It is an arithmetic number, because the mean of its divisors is an integer number (4581252).

Almost surely, 2^55503315 is an apocalyptic number.

55503315 is a deficient number, since it is larger than the sum of its proper divisors (54446733).

55503315 is a wasteful number, since it uses less digits than its factorization.

55503315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176219 (or 176216 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 55503315 is about 7450.0546977858. The cubic root of 55503315 is about 381.4517756607.

The spelling of 55503315 in words is "fifty-five million, five hundred three thousand, three hundred fifteen".