55427600 has 30 divisors (see below), whose sum is σ = 133165770. Its totient is φ = 22170880.

The previous prime is 55427587. The next prime is 55427629. The reversal of 55427600 is 672455.

It can be written as a sum of positive squares in 3 ways, for example, as 6091024 + 49336576 = 2468^2 + 7024^2 .

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, 68885 + ... + 69684.

It is an arithmetic number, because the mean of its divisors is an integer number (4438859).

Almost surely, 2^55427600 is an apocalyptic number.

55427600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55427600 is an abundant number, since it is smaller than the sum of its proper divisors (77738170).

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

55427600 is a wasteful number, since it uses less digits than its factorization.

55427600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138587 (or 138576 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 55427600 is about 7444.9714572992. The cubic root of 55427600 is about 381.2782438988.

The spelling of 55427600 in words is "fifty-five million, four hundred twenty-seven thousand, six hundred".