55568890 has 48 divisors (see below), whose sum is σ = 109571616. Its totient is φ = 20280000.

The previous prime is 55568879. The next prime is 55568893. The reversal of 55568890 is 9886555.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55568890.

It is not an unprimeable number, because it can be changed into a prime (55568893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221265 + ... + 221515.

It is an arithmetic number, because the mean of its divisors is an integer number (2282742).

Almost surely, 2^55568890 is an apocalyptic number.

55568890 is a deficient number, since it is larger than the sum of its proper divisors (54002726).

55568890 is a wasteful number, since it uses less digits than its factorization.

55568890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 46.

The square root of 55568890 is about 7454.4543730578. The cubic root of 55568890 is about 381.6019399992.

The spelling of 55568890 in words is "fifty-five million, five hundred sixty-eight thousand, eight hundred ninety".