55999600 has 30 divisors (see below), whose sum is σ = 134540000. Its totient is φ = 22399680.

The previous prime is 55999597. The next prime is 55999633. The reversal of 55999600 is 699955.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69600 + ... + 70399.

Almost surely, 2^55999600 is an apocalyptic number.

55999600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55999600 is an abundant number, since it is smaller than the sum of its proper divisors (78540400).

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

55999600 is a wasteful number, since it uses less digits than its factorization.

55999600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140017 (or 140006 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 55999600 is about 7483.2880473760. The cubic root of 55999600 is about 382.5853256327.

The spelling of 55999600 in words is "fifty-five million, nine hundred ninety-nine thousand, six hundred".