55031272 has 32 divisors (see below), whose sum is σ = 109457280. Its totient is φ = 25882560.

The previous prime is 55031257. The next prime is 55031279. The reversal of 55031272 is 27213055.

It is not an unprimeable number, because it can be changed into a prime (55031279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8773 + ... + 13675.

It is an arithmetic number, because the mean of its divisors is an integer number (3420540).

Almost surely, 2^55031272 is an apocalyptic number.

It is an amenable number.

55031272 is a deficient number, since it is larger than the sum of its proper divisors (54426008).

55031272 is a wasteful number, since it uses less digits than its factorization.

55031272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 55031272 is about 7418.3065452972. The cubic root of 55031272 is about 380.3673087408.

The spelling of 55031272 in words is "fifty-five million, thirty-one thousand, two hundred seventy-two".