55163372 has 24 divisors (see below), whose sum is σ = 106363152. Its totient is φ = 24824000.

The previous prime is 55163371. The next prime is 55163393. The reversal of 55163372 is 27336155.

It is a super-2 number, since 2×55163372² = 6085995220820768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55163371) 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, 1763 + ... + 10650.

It is an arithmetic number, because the mean of its divisors is an integer number (4431798).

Almost surely, 2^55163372 is an apocalyptic number.

It is an amenable number.

55163372 is a deficient number, since it is larger than the sum of its proper divisors (51199780).

55163372 is a wasteful number, since it uses less digits than its factorization.

55163372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12529 (or 12527 counting only the distinct ones).

The product of its digits is 18900, while the sum is 32.

The square root of 55163372 is about 7427.2048578183. The cubic root of 55163372 is about 380.6714168620.

It can be divided in two parts, 5516 and 3372, that added together give a palindrome (8888).

The spelling of 55163372 in words is "fifty-five million, one hundred sixty-three thousand, three hundred seventy-two".