55603317 has 16 divisors (see below), whose sum is σ = 92431872. Its totient is φ = 28884720.

The previous prime is 55603313. The next prime is 55603319. The reversal of 55603317 is 71330655.

It is not a de Polignac number, because 55603317 - 2² = 55603313 is a prime.

It is a super-2 number, since 2×55603317² = 6183457722804978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55603313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120123 + ... + 120584.

It is an arithmetic number, because the mean of its divisors is an integer number (5776992).

Almost surely, 2^55603317 is an apocalyptic number.

It is an amenable number.

55603317 is a deficient number, since it is larger than the sum of its proper divisors (36828555).

55603317 is a wasteful number, since it uses less digits than its factorization.

55603317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240728.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 55603317 is about 7456.7631717790. The cubic root of 55603317 is about 381.6807292755.

The spelling of 55603317 in words is "fifty-five million, six hundred three thousand, three hundred seventeen".