55645594 has 8 divisors (see below), whose sum is σ = 83641248. Its totient is φ = 27765180.

The previous prime is 55645591. The next prime is 55645621. The reversal of 55645594 is 49554655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55645594² = 6192864263225672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55645594.

It is not an unprimeable number, because it can be changed into a prime (55645591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27592 + ... + 29539.

It is an arithmetic number, because the mean of its divisors is an integer number (10455156).

Almost surely, 2^55645594 is an apocalyptic number.

55645594 is a deficient number, since it is larger than the sum of its proper divisors (27995654).

55645594 is a wasteful number, since it uses less digits than its factorization.

55645594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57620.

The product of its digits is 540000, while the sum is 43.

The square root of 55645594 is about 7459.5974422217. The cubic root of 55645594 is about 381.7774395028. Note that the first 3 decimals are identical.

The spelling of 55645594 in words is "fifty-five million, six hundred forty-five thousand, five hundred ninety-four".