55390700 has 36 divisors (see below), whose sum is σ = 126528360. Its totient is φ = 20989440.

The previous prime is 55390697. The next prime is 55390759. The reversal of 55390700 is 709355.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12677 + ... + 16476.

Almost surely, 2^55390700 is an apocalyptic number.

55390700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55390700 is an abundant number, since it is smaller than the sum of its proper divisors (71137660).

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

55390700 is a wasteful number, since it uses less digits than its factorization.

55390700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29186 (or 29179 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 55390700 is about 7442.4928619381. The cubic root of 55390700 is about 381.1936152393.

The spelling of 55390700 in words is "fifty-five million, three hundred ninety thousand, seven hundred".