55609317 has 12 divisors (see below), whose sum is σ = 80452684. Its totient is φ = 37013760.

The previous prime is 55609303. The next prime is 55609343. The reversal of 55609317 is 71390655.

It is a happy number.

55609317 is a `hidden beast` number, since 5 + 560 + 93 + 1 + 7 = 666.

55609317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27029601 + 28579716 = 5199^2 + 5346^2 .

It is not a de Polignac number, because 55609317 - 2⁷ = 55609189 is a prime.

It is a super-2 number, since 2×55609317² = 6184792274412978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55609517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467 + ... + 10647.

Almost surely, 2^55609317 is an apocalyptic number.

It is an amenable number.

55609317 is a deficient number, since it is larger than the sum of its proper divisors (24843367).

55609317 is a wasteful number, since it uses less digits than its factorization.

55609317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 9857 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 55609317 is about 7457.1654802613. The cubic root of 55609317 is about 381.6944574854.

The spelling of 55609317 in words is "fifty-five million, six hundred nine thousand, three hundred seventeen".