253117690 has 16 divisors (see below), whose sum is σ = 520699392. Its totient is φ = 86783184.

The previous prime is 253117673. The next prime is 253117693. The reversal of 253117690 is 96711352.

It is a super-2 number, since 2×253117690² = 128137129981872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253117693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1807914 + ... + 1808053.

It is an arithmetic number, because the mean of its divisors is an integer number (32543712).

Almost surely, 2^253117690 is an apocalyptic number.

253117690 is an abundant number, since it is smaller than the sum of its proper divisors (267581702).

253117690 is a wasteful number, since it uses less digits than its factorization.

253117690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615981.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 253117690 is about 15909.6728439022. The cubic root of 253117690 is about 632.5684095421.

The spelling of 253117690 in words is "two hundred fifty-three million, one hundred seventeen thousand, six hundred ninety".