253056685 has 16 divisors (see below), whose sum is σ = 349186176. Its totient is φ = 172456128.

The previous prime is 253056667. The next prime is 253056701. The reversal of 253056685 is 586650352.

It is a cyclic number.

It is not a de Polignac number, because 253056685 - 2¹⁵ = 253023917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16474 + ... + 27883.

It is an arithmetic number, because the mean of its divisors is an integer number (21824136).

Almost surely, 2^253056685 is an apocalyptic number.

It is an amenable number.

253056685 is a deficient number, since it is larger than the sum of its proper divisors (96129491).

253056685 is a wasteful number, since it uses less digits than its factorization.

253056685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44532.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 253056685 is about 15907.7554984982. The cubic root of 253056685 is about 632.5175861004.

The spelling of 253056685 in words is "two hundred fifty-three million, fifty-six thousand, six hundred eighty-five".