253091251 has 16 divisors (see below), whose sum is σ = 293299200. Its totient is φ = 213919200.

The previous prime is 253091243. The next prime is 253091261. The reversal of 253091251 is 152190352.

253091251 is a nontrivial binomial coefficient, being equal to C(22499, 2).

It is a cyclic number.

It is not a de Polignac number, because 253091251 - 2³ = 253091243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253091231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156690 + ... + 158296.

It is an arithmetic number, because the mean of its divisors is an integer number (18331200).

Almost surely, 2^253091251 is an apocalyptic number.

253091251 is the 22498-th triangular number.

253091251 is the 7500-th centered nonagonal number.

253091251 is a deficient number, since it is larger than the sum of its proper divisors (40207949).

253091251 is a wasteful number, since it uses less digits than its factorization.

253091251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 253091251 is about 15908.8419125969. The cubic root of 253091251 is about 632.5463841376.

The spelling of 253091251 in words is "two hundred fifty-three million, ninety-one thousand, two hundred fifty-one".