55994520 has 128 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 13777920.

The previous prime is 55994507. The next prime is 55994537. The reversal of 55994520 is 2549955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93181 + ... + 93779.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^55994520 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 55994520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

55994520 is an abundant number, since it is smaller than the sum of its proper divisors (125445480).

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

55994520 is a wasteful number, since it uses less digits than its factorization.

55994520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 55994520 is about 7482.9486166885. The cubic root of 55994520 is about 382.5737565487.

The spelling of 55994520 in words is "fifty-five million, nine hundred ninety-four thousand, five hundred twenty".