55977072 has 40 divisors (see below), whose sum is σ = 149276160. Its totient is φ = 18056640.

The previous prime is 55977071. The next prime is 55977113. The reversal of 55977072 is 27077955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55977071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17322 + ... + 20297.

It is an arithmetic number, because the mean of its divisors is an integer number (3731904).

Almost surely, 2^55977072 is an apocalyptic number.

It is an amenable number.

55977072 is an abundant number, since it is smaller than the sum of its proper divisors (93299088).

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

55977072 is a wasteful number, since it uses less digits than its factorization.

55977072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37661 (or 37655 counting only the distinct ones).

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 55977072 is about 7481.7826752720. The cubic root of 55977072 is about 382.5340155148.

The spelling of 55977072 in words is "fifty-five million, nine hundred seventy-seven thousand, seventy-two".