253161557 has 8 divisors (see below), whose sum is σ = 276417792. Its totient is φ = 229945600.

The previous prime is 253161551. The next prime is 253161563. The reversal of 253161557 is 755161352.

It is an interprime number because it is at equal distance from previous prime (253161551) and next prime (253161563).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253161557 - 2⁴ = 253161541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253161551) 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, 3932 + ... + 22842.

It is an arithmetic number, because the mean of its divisors is an integer number (34552224).

Almost surely, 2^253161557 is an apocalyptic number.

It is an amenable number.

253161557 is a deficient number, since it is larger than the sum of its proper divisors (23256235).

253161557 is a wasteful number, since it uses less digits than its factorization.

253161557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20139.

The product of its digits is 31500, while the sum is 35.

The square root of 253161557 is about 15911.0514108905. The cubic root of 253161557 is about 632.6049502195.

The spelling of 253161557 in words is "two hundred fifty-three million, one hundred sixty-one thousand, five hundred fifty-seven".