252681 has 32 divisors (see below), whose sum is σ = 430080. Its totient is φ = 129600.

The previous prime is 252667. The next prime is 252691. The reversal of 252681 is 186252.

It is not a de Polignac number, because 252681 - 2⁶ = 252617 is a prime.

It is a super-2 number, since 2×252681² = 127695375522, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8136 + ... + 8166.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2²⁵²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

252681 is a deficient number, since it is larger than the sum of its proper divisors (177399).

252681 is a wasteful number, since it uses less digits than its factorization.

252681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77.

The product of its digits is 960, while the sum is 24.

The square root of 252681 is about 502.6738505234. The cubic root of 252681 is about 63.2204421668.

The spelling of 252681 in words is "two hundred fifty-two thousand, six hundred eighty-one".