55172272 has 10 divisors (see below), whose sum is σ = 106896308. Its totient is φ = 27586128.

The previous prime is 55172269. The next prime is 55172279. The reversal of 55172272 is 27227155.

55172272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55172279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1724118 + ... + 1724149.

Almost surely, 2^55172272 is an apocalyptic number.

It is an amenable number.

55172272 is a deficient number, since it is larger than the sum of its proper divisors (51724036).

55172272 is a wasteful number, since it uses less digits than its factorization.

55172272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448275 (or 3448269 counting only the distinct ones).

The product of its digits is 9800, while the sum is 31.

The square root of 55172272 is about 7427.8039823356. The cubic root of 55172272 is about 380.6918881355.

The spelling of 55172272 in words is "fifty-five million, one hundred seventy-two thousand, two hundred seventy-two".