55617339 has 4 divisors (see below), whose sum is σ = 74156456. Its totient is φ = 37078224.

The previous prime is 55617337. The next prime is 55617347. The reversal of 55617339 is 93371655.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55617339 - 2¹ = 55617337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55617297 and 55617306.

It is not an unprimeable number, because it can be changed into a prime (55617337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9269554 + ... + 9269559.

It is an arithmetic number, because the mean of its divisors is an integer number (18539114).

Almost surely, 2^55617339 is an apocalyptic number.

55617339 is a deficient number, since it is larger than the sum of its proper divisors (18539117).

55617339 is a wasteful number, since it uses less digits than its factorization.

55617339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18539116.

The product of its digits is 85050, while the sum is 39.

The square root of 55617339 is about 7457.7033327962. The cubic root of 55617339 is about 381.7128105593.

The spelling of 55617339 in words is "fifty-five million, six hundred seventeen thousand, three hundred thirty-nine".