253164986 has 16 divisors (see below), whose sum is σ = 404502336. Its totient is φ = 118420416.

The previous prime is 253164973. The next prime is 253164991. The reversal of 253164986 is 689461352.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16616 + ... + 27971.

It is an arithmetic number, because the mean of its divisors is an integer number (25281396).

Almost surely, 2^253164986 is an apocalyptic number.

253164986 is a deficient number, since it is larger than the sum of its proper divisors (151337350).

253164986 is a wasteful number, since it uses less digits than its factorization.

253164986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44773.

The product of its digits is 311040, while the sum is 44.

The square root of 253164986 is about 15911.1591658182. The cubic root of 253164986 is about 632.6078063569.

The spelling of 253164986 in words is "two hundred fifty-three million, one hundred sixty-four thousand, nine hundred eighty-six".