55738520 has 32 divisors (see below), whose sum is σ = 125755200. Its totient is φ = 22234368.

The previous prime is 55738519. The next prime is 55738523. The reversal of 55738520 is 2583755.

It is a super-2 number, since 2×55738520² = 6213565223580800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55738523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14657 + ... + 18063.

It is an arithmetic number, because the mean of its divisors is an integer number (3929850).

Almost surely, 2^55738520 is an apocalyptic number.

It is an amenable number.

55738520 is an abundant number, since it is smaller than the sum of its proper divisors (70016680).

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

55738520 is a wasteful number, since it uses less digits than its factorization.

55738520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 55738520 is about 7465.8234642938. The cubic root of 55738520 is about 381.9898391895.

The spelling of 55738520 in words is "fifty-five million, seven hundred thirty-eight thousand, five hundred twenty".