55881332 has 12 divisors (see below), whose sum is σ = 105314916. Its totient is φ = 25791360.

The previous prime is 55881317. The next prime is 55881367. The reversal of 55881332 is 23318855.

It can be written as a sum of positive squares in 2 ways, for example, as 13942756 + 41938576 = 3734^2 + 6476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55881292 and 55881301.

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, 537269 + ... + 537372.

It is an arithmetic number, because the mean of its divisors is an integer number (8776243).

Almost surely, 2^55881332 is an apocalyptic number.

55881332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55881332 is a deficient number, since it is larger than the sum of its proper divisors (49433584).

55881332 is a wasteful number, since it uses less digits than its factorization.

55881332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074658 (or 1074656 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 55881332 is about 7475.3817293835. The cubic root of 55881332 is about 382.3158029208.

The spelling of 55881332 in words is "fifty-five million, eight hundred eighty-one thousand, three hundred thirty-two".