55165272 has 32 divisors (see below), whose sum is σ = 146026800. Its totient is φ = 17306624.

The previous prime is 55165249. The next prime is 55165273. The reversal of 55165272 is 27256155.

It is a super-4 number, since 4×55165272⁴ (a number of 32 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165273) 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 7 ways as a sum of consecutive naturals, for example, 67197 + ... + 68012.

Almost surely, 2^55165272 is an apocalyptic number.

It is an amenable number.

55165272 is an abundant number, since it is smaller than the sum of its proper divisors (90861528).

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

55165272 is a wasteful number, since it uses less digits than its factorization.

55165272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135235 (or 135231 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 55165272 is about 7427.3327648625. The cubic root of 55165272 is about 380.6757873188.

The spelling of 55165272 in words is "fifty-five million, one hundred sixty-five thousand, two hundred seventy-two".