253768081 has 16 divisors (see below), whose sum is σ = 296659584. Its totient is φ = 212569344.

The previous prime is 253768079. The next prime is 253768117. The reversal of 253768081 is 180867352.

It is a cyclic number.

It is not a de Polignac number, because 253768081 - 2¹ = 253768079 is a prime.

It is a super-2 number, since 2×253768081² = 128796477868845122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253768051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103785 + ... + 106201.

It is an arithmetic number, because the mean of its divisors is an integer number (18541224).

Almost surely, 2^253768081 is an apocalyptic number.

It is an amenable number.

253768081 is a deficient number, since it is larger than the sum of its proper divisors (42891503).

253768081 is a wasteful number, since it uses less digits than its factorization.

253768081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 253768081 is about 15930.0998427505. The cubic root of 253768081 is about 633.1097452364.

The spelling of 253768081 in words is "two hundred fifty-three million, seven hundred sixty-eight thousand, eighty-one".