55812663 has 12 divisors (see below), whose sum is σ = 80982720. Its totient is φ = 37040256.

The previous prime is 55812619. The next prime is 55812703. The reversal of 55812663 is 36621855.

It is not a de Polignac number, because 55812663 - 2¹³ = 55804471 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55812863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11898 + ... + 15911.

It is an arithmetic number, because the mean of its divisors is an integer number (6748560).

Almost surely, 2^55812663 is an apocalyptic number.

55812663 is a deficient number, since it is larger than the sum of its proper divisors (25170057).

55812663 is a wasteful number, since it uses less digits than its factorization.

55812663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28038 (or 28035 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55812663 is about 7470.7873079080. The cubic root of 55812663 is about 382.1591375734.

The spelling of 55812663 in words is "fifty-five million, eight hundred twelve thousand, six hundred sixty-three".