55945564 has 6 divisors (see below), whose sum is σ = 97904744. Its totient is φ = 27972780.

The previous prime is 55945543. The next prime is 55945567. The reversal of 55945564 is 46554955.

It is a super-3 number, since 3×55945564³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55945564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55945567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6993192 + ... + 6993199.

Almost surely, 2^55945564 is an apocalyptic number.

It is an amenable number.

55945564 is a deficient number, since it is larger than the sum of its proper divisors (41959180).

55945564 is a wasteful number, since it uses less digits than its factorization.

55945564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13986395 (or 13986393 counting only the distinct ones).

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

The square root of 55945564 is about 7479.6767309824. The cubic root of 55945564 is about 382.4622293147.

The spelling of 55945564 in words is "fifty-five million, nine hundred forty-five thousand, five hundred sixty-four".