55513965 has 48 divisors (see below), whose sum is σ = 98029440. Its totient is φ = 26807040.

The previous prime is 55513937. The next prime is 55513981. The reversal of 55513965 is 56931555.

It is not a de Polignac number, because 55513965 - 2⁷ = 55513837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154456 + ... + 154814.

It is an arithmetic number, because the mean of its divisors is an integer number (2042280).

Almost surely, 2^55513965 is an apocalyptic number.

It is an amenable number.

55513965 is a deficient number, since it is larger than the sum of its proper divisors (42515475).

55513965 is a wasteful number, since it uses less digits than its factorization.

55513965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 441 counting only the distinct ones).

The product of its digits is 101250, while the sum is 39.

The square root of 55513965 is about 7450.7694233549. The cubic root of 55513965 is about 381.4761718108.

The spelling of 55513965 in words is "fifty-five million, five hundred thirteen thousand, nine hundred sixty-five".