55123272 has 48 divisors (see below), whose sum is σ = 155787840. Its totient is φ = 17575008.

The previous prime is 55123261. The next prime is 55123273. The reversal of 55123272 is 27232155.

It is not an unprimeable number, because it can be changed into a prime (55123273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14988 + ... + 18299.

It is an arithmetic number, because the mean of its divisors is an integer number (3245580).

Almost surely, 2^55123272 is an apocalyptic number.

It is an amenable number.

55123272 is an abundant number, since it is smaller than the sum of its proper divisors (100664568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55123272 is a wasteful number, since it uses less digits than its factorization.

55123272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33322 (or 33315 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 55123272 is about 7424.5048319736. The cubic root of 55123272 is about 380.5791538041.

The spelling of 55123272 in words is "fifty-five million, one hundred twenty-three thousand, two hundred seventy-two".