55617163 has 4 divisors (see below), whose sum is σ = 63562480. Its totient is φ = 47671848.

The previous prime is 55617143. The next prime is 55617173. The reversal of 55617163 is 36171655.

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

It is a de Polignac number, because none of the positive numbers 2^k-55617163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55617143) 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, 3972648 + ... + 3972661.

It is an arithmetic number, because the mean of its divisors is an integer number (15890620).

Almost surely, 2^55617163 is an apocalyptic number.

55617163 is a deficient number, since it is larger than the sum of its proper divisors (7945317).

55617163 is an equidigital number, since it uses as much as digits as its factorization.

55617163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945316.

The product of its digits is 18900, while the sum is 34.

The square root of 55617163 is about 7457.6915329075. The cubic root of 55617163 is about 381.7124079179.

The spelling of 55617163 in words is "fifty-five million, six hundred seventeen thousand, one hundred sixty-three".