55972959 has 32 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 29724672.

The previous prime is 55972957. The next prime is 55972963. The reversal of 55972959 is 95927955.

It is not a de Polignac number, because 55972959 - 2¹ = 55972957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55972951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28687 + ... + 30575.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^55972959 is an apocalyptic number.

55972959 is a deficient number, since it is larger than the sum of its proper divisors (35472801).

55972959 is a wasteful number, since it uses less digits than its factorization.

55972959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999.

The product of its digits is 1275750, while the sum is 51.

The square root of 55972959 is about 7481.5078025756. The cubic root of 55972959 is about 382.5246461969.

The spelling of 55972959 in words is "fifty-five million, nine hundred seventy-two thousand, nine hundred fifty-nine".