55707624 has 96 divisors (see below), whose sum is σ = 174208320. Its totient is φ = 15752448.

The previous prime is 55707581. The next prime is 55707649. The reversal of 55707624 is 42670755.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53412 + ... + 54444.

It is an arithmetic number, because the mean of its divisors is an integer number (1814670).

Almost surely, 2^55707624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55707624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87104160).

55707624 is an abundant number, since it is smaller than the sum of its proper divisors (118500696).

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

55707624 is a wasteful number, since it uses less digits than its factorization.

55707624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 55707624 is about 7463.7540152392. The cubic root of 55707624 is about 381.9192468394.

The spelling of 55707624 in words is "fifty-five million, seven hundred seven thousand, six hundred twenty-four".