55732772 has 24 divisors (see below), whose sum is σ = 103451712. Its totient is φ = 26215200.

The previous prime is 55732759. The next prime is 55732777. The reversal of 55732772 is 27723755.

It is a super-2 number, since 2×55732772² = 6212283749607968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55732777) 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, 647 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (4310488).

Almost surely, 2^55732772 is an apocalyptic number.

It is an amenable number.

55732772 is a deficient number, since it is larger than the sum of its proper divisors (47718940).

55732772 is a wasteful number, since it uses less digits than its factorization.

55732772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019 (or 10017 counting only the distinct ones).

The product of its digits is 102900, while the sum is 38.

The square root of 55732772 is about 7465.4385001820. The cubic root of 55732772 is about 381.9767079171.

The spelling of 55732772 in words is "fifty-five million, seven hundred thirty-two thousand, seven hundred seventy-two".