55615475 has 24 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 41888000.

The previous prime is 55615471. The next prime is 55615487. The reversal of 55615475 is 57451655.

It is not a de Polignac number, because 55615475 - 2² = 55615471 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55615471) 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, 28790 + ... + 30660.

It is an arithmetic number, because the mean of its divisors is an integer number (3046680).

Almost surely, 2^55615475 is an apocalyptic number.

55615475 is a deficient number, since it is larger than the sum of its proper divisors (17504845).

55615475 is a wasteful number, since it uses less digits than its factorization.

55615475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951 (or 1946 counting only the distinct ones).

The product of its digits is 105000, while the sum is 38.

The square root of 55615475 is about 7457.5783602990. The cubic root of 55615475 is about 381.7085461779.

The spelling of 55615475 in words is "fifty-five million, six hundred fifteen thousand, four hundred seventy-five".