55906624 has 14 divisors (see below), whose sum is σ = 110939834. Its totient is φ = 27953280.

The previous prime is 55906597. The next prime is 55906639. The reversal of 55906624 is 42660955.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 8020224 = 6920^2 + 2832^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436707 + ... + 436834.

Almost surely, 2^55906624 is an apocalyptic number.

It is an amenable number.

55906624 is a deficient number, since it is larger than the sum of its proper divisors (55033210).

55906624 is an equidigital number, since it uses as much as digits as its factorization.

55906624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873553 (or 873543 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 55906624 is about 7477.0732241968. The cubic root of 55906624 is about 382.3734731808.

The spelling of 55906624 in words is "fifty-five million, nine hundred six thousand, six hundred twenty-four".