55231132 has 12 divisors (see below), whose sum is σ = 105441336. Its totient is φ = 25105040.

The previous prime is 55231103. The next prime is 55231151. The reversal of 55231132 is 23113255.

It is a super-3 number, since 3×55231132³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627583 + ... + 627670.

It is an arithmetic number, because the mean of its divisors is an integer number (8786778).

Almost surely, 2^55231132 is an apocalyptic number.

It is an amenable number.

55231132 is a deficient number, since it is larger than the sum of its proper divisors (50210204).

55231132 is a wasteful number, since it uses less digits than its factorization.

55231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255268 (or 1255266 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 55231132 is about 7431.7650662544. The cubic root of 55231132 is about 380.8272191634.

Adding to 55231132 its reverse (23113255), we get a palindrome (78344387).

It can be divided in two parts, 552 and 31132, that added together give a square (31684 = 178²).

The spelling of 55231132 in words is "fifty-five million, two hundred thirty-one thousand, one hundred thirty-two".