55772136 has 96 divisors (see below), whose sum is σ = 176904000. Its totient is φ = 15540480.

The previous prime is 55772107. The next prime is 55772141. The reversal of 55772136 is 63127755.

55772136 is a `hidden beast` number, since 557 + 72 + 1 + 36 = 666.

It is a super-2 number, since 2×55772136² = 6221062308004992, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55772136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19315 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (1842750).

Almost surely, 2^55772136 is an apocalyptic number.

55772136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55772136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88452000).

55772136 is an abundant number, since it is smaller than the sum of its proper divisors (121131864).

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

55772136 is a wasteful number, since it uses less digits than its factorization.

55772136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2752 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 55772136 is about 7468.0744506198. The cubic root of 55772136 is about 382.0666166726.

The spelling of 55772136 in words is "fifty-five million, seven hundred seventy-two thousand, one hundred thirty-six".