55210972 has 12 divisors (see below), whose sum is σ = 97705440. Its totient is φ = 27295136.

The previous prime is 55210963. The next prime is 55210997. The reversal of 55210972 is 27901255.

It is a congruent number.

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, 77188 + ... + 77899.

It is an arithmetic number, because the mean of its divisors is an integer number (8142120).

Almost surely, 2^55210972 is an apocalyptic number.

It is an amenable number.

55210972 is a deficient number, since it is larger than the sum of its proper divisors (42494468).

55210972 is a wasteful number, since it uses less digits than its factorization.

55210972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155180 (or 155178 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 55210972 is about 7430.4086024929. The cubic root of 55210972 is about 380.7808780826.

The spelling of 55210972 in words is "fifty-five million, two hundred ten thousand, nine hundred seventy-two".