55455564 has 24 divisors (see below), whose sum is σ = 137008368. Its totient is φ = 17397760.

The previous prime is 55455557. The next prime is 55455583. The reversal of 55455564 is 46555455.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135717 + ... + 136124.

It is an arithmetic number, because the mean of its divisors is an integer number (5708682).

Almost surely, 2^55455564 is an apocalyptic number.

It is an amenable number.

55455564 is an abundant number, since it is smaller than the sum of its proper divisors (81552804).

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

55455564 is a wasteful number, since it uses less digits than its factorization.

55455564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271865 (or 271863 counting only the distinct ones).

The product of its digits is 300000, while the sum is 39.

The square root of 55455564 is about 7446.8492666362. The cubic root of 55455564 is about 381.3423531889.

The spelling of 55455564 in words is "fifty-five million, four hundred fifty-five thousand, five hundred sixty-four".