55977020 has 36 divisors (see below), whose sum is σ = 129215352. Its totient is φ = 20354400.

The previous prime is 55977007. The next prime is 55977023. The reversal of 55977020 is 2077955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55977023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9146 + ... + 13985.

Almost surely, 2^55977020 is an apocalyptic number.

It is an amenable number.

55977020 is an abundant number, since it is smaller than the sum of its proper divisors (73238332).

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

55977020 is a wasteful number, since it uses less digits than its factorization.

55977020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162 (or 23149 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 55977020 is about 7481.7792001636. The cubic root of 55977020 is about 382.5338970629.

The spelling of 55977020 in words is "fifty-five million, nine hundred seventy-seven thousand, twenty".