252160681 has 4 divisors (see below), whose sum is σ = 252201600. Its totient is φ = 252119764.

The previous prime is 252160679. The next prime is 252160691. The reversal of 252160681 is 186061252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252160681 - 2¹ = 252160679 is a prime.

It is a super-2 number, since 2×252160681² = 127170018084767522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252160621) 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, 9121 + ... + 24238.

It is an arithmetic number, because the mean of its divisors is an integer number (63050400).

Almost surely, 2^252160681 is an apocalyptic number.

It is an amenable number.

252160681 is a deficient number, since it is larger than the sum of its proper divisors (40919).

252160681 is an equidigital number, since it uses as much as digits as its factorization.

252160681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40918.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 252160681 is about 15879.5680356866. The cubic root of 252160681 is about 631.7701797843.

The spelling of 252160681 in words is "two hundred fifty-two million, one hundred sixty thousand, six hundred eighty-one".