55813700 has 36 divisors (see below), whose sum is σ = 121489620. Its totient is φ = 22256640.

The previous prime is 55813691. The next prime is 55813741. The reversal of 55813700 is 731855.

It can be written as a sum of positive squares in 6 ways, for example, as 2114116 + 53699584 = 1454^2 + 7328^2 .

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, 42656 + ... + 43944.

Almost surely, 2^55813700 is an apocalyptic number.

55813700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55813700 is an abundant number, since it is smaller than the sum of its proper divisors (65675920).

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

55813700 is a wasteful number, since it uses less digits than its factorization.

55813700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 55813700 is about 7470.8567112480. The cubic root of 55813700 is about 382.1615043993.

The spelling of 55813700 in words is "fifty-five million, eight hundred thirteen thousand, seven hundred".