55573317 has 16 divisors (see below), whose sum is σ = 84084480. Its totient is φ = 36259776.

The previous prime is 55573307. The next prime is 55573319. The reversal of 55573317 is 71337555.

It is a happy number.

55573317 is a `hidden beast` number, since 55 + 573 + 31 + 7 = 666.

It is not a de Polignac number, because 55573317 - 2⁶ = 55573253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55573319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20628 + ... + 23165.

It is an arithmetic number, because the mean of its divisors is an integer number (5255280).

Almost surely, 2^55573317 is an apocalyptic number.

It is an amenable number.

55573317 is a deficient number, since it is larger than the sum of its proper divisors (28511163).

55573317 is a wasteful number, since it uses less digits than its factorization.

55573317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43849 (or 43843 counting only the distinct ones).

The product of its digits is 55125, while the sum is 36.

The square root of 55573317 is about 7454.7513036989. The cubic root of 55573317 is about 381.6120734086.

The spelling of 55573317 in words is "fifty-five million, five hundred seventy-three thousand, three hundred seventeen".