55917472 has 24 divisors (see below), whose sum is σ = 118556676. Its totient is φ = 25807872.

The previous prime is 55917469. The next prime is 55917479. The reversal of 55917472 is 27471955.

55917472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55890576 + 26896 = 7476^2 + 164^2 .

It is not an unprimeable number, because it can be changed into a prime (55917479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66793 + ... + 67624.

Almost surely, 2^55917472 is an apocalyptic number.

55917472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55917472 is an abundant number, since it is smaller than the sum of its proper divisors (62639204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55917472 is a wasteful number, since it uses less digits than its factorization.

55917472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134440 (or 134432 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 55917472 is about 7477.7986065419. The cubic root of 55917472 is about 382.3982032210.

The spelling of 55917472 in words is "fifty-five million, nine hundred seventeen thousand, four hundred seventy-two".