55556128 has 24 divisors (see below), whose sum is σ = 109549692. Its totient is φ = 27734016.

The previous prime is 55556113. The next prime is 55556143. The reversal of 55556128 is 82165555.

It is an interprime number because it is at equal distance from previous prime (55556113) and next prime (55556143).

It can be written as a sum of positive squares in 2 ways, for example, as 51667344 + 3888784 = 7188^2 + 1972^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30376 + ... + 32152.

Almost surely, 2^55556128 is an apocalyptic number.

It is an amenable number.

55556128 is a deficient number, since it is larger than the sum of its proper divisors (53993564).

55556128 is a wasteful number, since it uses less digits than its factorization.

55556128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2756 counting only the distinct ones).

The product of its digits is 60000, while the sum is 37.

The square root of 55556128 is about 7453.5983256411. The cubic root of 55556128 is about 381.5727247506.

The spelling of 55556128 in words is "fifty-five million, five hundred fifty-six thousand, one hundred twenty-eight".