55536993 has 12 divisors (see below), whose sum is σ = 80391168. Its totient is φ = 36945720.

The previous prime is 55536991. The next prime is 55537007. The reversal of 55536993 is 39963555.

It is a happy number.

55536993 is a `hidden beast` number, since 5 + 553 + 6 + 9 + 93 = 666.

It is not a de Polignac number, because 55536993 - 2¹ = 55536991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55536991) 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, 1953 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (6699264).

Almost surely, 2^55536993 is an apocalyptic number.

It is an amenable number.

55536993 is a deficient number, since it is larger than the sum of its proper divisors (24854175).

55536993 is a wasteful number, since it uses less digits than its factorization.

55536993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13164 (or 13161 counting only the distinct ones).

The product of its digits is 546750, while the sum is 45.

The square root of 55536993 is about 7452.3146068856. The cubic root of 55536993 is about 381.5289118069.

The spelling of 55536993 in words is "fifty-five million, five hundred thirty-six thousand, nine hundred ninety-three".