55812772 has 12 divisors (see below), whose sum is σ = 100823296. Its totient is φ = 27006120.

The previous prime is 55812749. The next prime is 55812781. The reversal of 55812772 is 27721855.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224928 + ... + 225175.

Almost surely, 2^55812772 is an apocalyptic number.

It is an amenable number.

55812772 is a deficient number, since it is larger than the sum of its proper divisors (45010524).

55812772 is a wasteful number, since it uses less digits than its factorization.

55812772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450138 (or 450136 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 55812772 is about 7470.7946029857. The cubic root of 55812772 is about 382.1593863540.

The spelling of 55812772 in words is "fifty-five million, eight hundred twelve thousand, seven hundred seventy-two".