55088564 has 12 divisors (see below), whose sum is σ = 96457284. Its totient is φ = 27529344.

The previous prime is 55088557. The next prime is 55088639. The reversal of 55088564 is 46588055.

It can be written as a sum of positive squares in 2 ways, for example, as 39816100 + 15272464 = 6310^2 + 3908^2 .

It is a congruent number.

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, 11174 + ... + 15330.

It is an arithmetic number, because the mean of its divisors is an integer number (8038107).

Almost surely, 2^55088564 is an apocalyptic number.

It is an amenable number.

55088564 is a deficient number, since it is larger than the sum of its proper divisors (41368720).

55088564 is a wasteful number, since it uses less digits than its factorization.

55088564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474 (or 7472 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 55088564 is about 7422.1670689900. The cubic root of 55088564 is about 380.4992606597.

The spelling of 55088564 in words is "fifty-five million, eighty-eight thousand, five hundred sixty-four".