55510772 has 24 divisors (see below), whose sum is σ = 99442560. Its totient is φ = 27106560.

The previous prime is 55510751. The next prime is 55510783. The reversal of 55510772 is 27701555.

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, 29747 + ... + 31557.

It is an arithmetic number, because the mean of its divisors is an integer number (4143440).

Almost surely, 2^55510772 is an apocalyptic number.

It is an amenable number.

55510772 is a deficient number, since it is larger than the sum of its proper divisors (43931788).

55510772 is a wasteful number, since it uses less digits than its factorization.

55510772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55510772 is about 7450.5551471015. Note that the first 3 decimals coincide. The cubic root of 55510772 is about 381.4688578747.

The spelling of 55510772 in words is "fifty-five million, five hundred ten thousand, seven hundred seventy-two".