55772884 has 24 divisors (see below), whose sum is σ = 102267648. Its totient is φ = 26563680.

The previous prime is 55772863. The next prime is 55772897. The reversal of 55772884 is 48827755.

It is a super-2 number, since 2×55772884² = 6221229179354912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23814 + ... + 26050.

It is an arithmetic number, because the mean of its divisors is an integer number (4261152).

Almost surely, 2^55772884 is an apocalyptic number.

It is an amenable number.

55772884 is a deficient number, since it is larger than the sum of its proper divisors (46494764).

55772884 is a wasteful number, since it uses less digits than its factorization.

55772884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535 (or 2533 counting only the distinct ones).

The product of its digits is 627200, while the sum is 46.

The square root of 55772884 is about 7468.1245302954. The cubic root of 55772884 is about 382.0683247212.

It can be divided in two parts, 557 and 72884, that added together give a square (73441 = 271²).

The spelling of 55772884 in words is "fifty-five million, seven hundred seventy-two thousand, eight hundred eighty-four".