55117472 has 24 divisors (see below), whose sum is σ = 109188576. Its totient is φ = 27387072.

The previous prime is 55117471. The next prime is 55117477. The reversal of 55117472 is 27471155.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (55117471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (4549524).

Almost surely, 2^55117472 is an apocalyptic number.

It is an amenable number.

55117472 is a deficient number, since it is larger than the sum of its proper divisors (54071104).

55117472 is a wasteful number, since it uses less digits than its factorization.

55117472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10740 (or 10732 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 55117472 is about 7424.1142232592. The cubic root of 55117472 is about 380.5658053191.

The spelling of 55117472 in words is "fifty-five million, one hundred seventeen thousand, four hundred seventy-two".