55133132 has 12 divisors (see below), whose sum is σ = 96705840. Its totient is φ = 27502896.

The previous prime is 55133131. The next prime is 55133137. The reversal of 55133132 is 23133155.

It is a junction number, because it is equal to n+sod(n) for n = 55133098 and 55133107.

It is not an unprimeable number, because it can be changed into a prime (55133131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13943 + ... + 17454.

It is an arithmetic number, because the mean of its divisors is an integer number (8058820).

Almost surely, 2^55133132 is an apocalyptic number.

It is an amenable number.

55133132 is a deficient number, since it is larger than the sum of its proper divisors (41572708).

55133132 is a wasteful number, since it uses less digits than its factorization.

55133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31840 (or 31838 counting only the distinct ones).

The product of its digits is 1350, while the sum is 23.

The square root of 55133132 is about 7425.1688196296. The cubic root of 55133132 is about 380.6018440799.

Adding to 55133132 its sum of digits (23), we get a palindrome (55133155).

Adding to 55133132 its reverse (23133155), we get a palindrome (78266287).

The spelling of 55133132 in words is "fifty-five million, one hundred thirty-three thousand, one hundred thirty-two".