55663317 has 6 divisors (see below), whose sum is σ = 80402582. Its totient is φ = 37108872.

The previous prime is 55663291. The next prime is 55663319. The reversal of 55663317 is 71336655.

It is a happy number.

55663317 is a `hidden beast` number, since 5 + 5 + 6 + 633 + 17 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 443556 = 7431^2 + 666^2 .

It is not a de Polignac number, because 55663317 - 2⁷ = 55663189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55663319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3092398 + ... + 3092415.

Almost surely, 2^55663317 is an apocalyptic number.

It is an amenable number.

55663317 is a deficient number, since it is larger than the sum of its proper divisors (24739265).

55663317 is a wasteful number, since it uses less digits than its factorization.

55663317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184819 (or 6184816 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 55663317 is about 7460.7852803844. The cubic root of 55663317 is about 381.8179669603.

The spelling of 55663317 in words is "fifty-five million, six hundred sixty-three thousand, three hundred seventeen".