55870163 has 2 divisors, whose sum is σ = 55870164. Its totient is φ = 55870162.

The previous prime is 55870079. The next prime is 55870181. The reversal of 55870163 is 36107855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55870163 - 2⁸ = 55869907 is a prime.

It is a super-2 number, since 2×55870163² = 6242950227293138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55870183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27935081 + 27935082.

It is an arithmetic number, because the mean of its divisors is an integer number (27935082).

Almost surely, 2^55870163 is an apocalyptic number.

55870163 is a deficient number, since it is larger than the sum of its proper divisors (1).

55870163 is an equidigital number, since it uses as much as digits as its factorization.

55870163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 55870163 is about 7474.6346399005. The cubic root of 55870163 is about 382.2903300746.

The spelling of 55870163 in words is "fifty-five million, eight hundred seventy thousand, one hundred sixty-three".