55140332 has 12 divisors (see below), whose sum is σ = 103918416. Its totient is φ = 25449360.

The previous prime is 55140311. The next prime is 55140347. The reversal of 55140332 is 23304155.

It is a junction number, because it is equal to n+sod(n) for n = 55140298 and 55140307.

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, 530144 + ... + 530247.

It is an arithmetic number, because the mean of its divisors is an integer number (8659868).

Almost surely, 2^55140332 is an apocalyptic number.

55140332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55140332 is a deficient number, since it is larger than the sum of its proper divisors (48778084).

55140332 is a wasteful number, since it uses less digits than its factorization.

55140332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060408 (or 1060406 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55140332 is about 7425.6536412628. The cubic root of 55140332 is about 380.6184113351.

Adding to 55140332 its reverse (23304155), we get a palindrome (78444487).

The spelling of 55140332 in words is "fifty-five million, one hundred forty thousand, three hundred thirty-two".