55172132 has 6 divisors (see below), whose sum is σ = 96551238. Its totient is φ = 27586064.

The previous prime is 55172129. The next prime is 55172149. The reversal of 55172132 is 23127155.

It can be written as a sum of positive squares in only one way, i.e., 42823936 + 12348196 = 6544^2 + 3514^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6896513 + ... + 6896520.

It is an arithmetic number, because the mean of its divisors is an integer number (16091873).

Almost surely, 2^55172132 is an apocalyptic number.

It is an amenable number.

55172132 is a deficient number, since it is larger than the sum of its proper divisors (41379106).

55172132 is a wasteful number, since it uses less digits than its factorization.

55172132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13793037 (or 13793035 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 55172132 is about 7427.7945582791. The cubic root of 55172132 is about 380.6915661325.

Adding to 55172132 its reverse (23127155), we get a palindrome (78299287).

The spelling of 55172132 in words is "fifty-five million, one hundred seventy-two thousand, one hundred thirty-two".