55672920 has 80 divisors (see below), whose sum is σ = 187133760. Its totient is φ = 14845248.

The previous prime is 55672919. The next prime is 55672921. The reversal of 55672920 is 2927655.

55672920 is a `hidden beast` number, since 5 + 567 + 2 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (55672919) and next prime (55672921).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55672921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5352 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (2339172).

Almost surely, 2^55672920 is an apocalyptic number.

It is an amenable number.

55672920 is an abundant number, since it is smaller than the sum of its proper divisors (131460840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55672920 is a wasteful number, since it uses less digits than its factorization.

55672920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206 (or 17193 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55672920 is about 7461.4288175925. The cubic root of 55672920 is about 381.8399226953.

The spelling of 55672920 in words is "fifty-five million, six hundred seventy-two thousand, nine hundred twenty".