253008251 has 4 divisors (see below), whose sum is σ = 254016504. Its totient is φ = 252000000.

The previous prime is 253008247. The next prime is 253008271. The reversal of 253008251 is 152800352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253008251 - 2² = 253008247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253008251.

It is not an unprimeable number, because it can be changed into a prime (253008271) 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, 503750 + ... + 504251.

It is an arithmetic number, because the mean of its divisors is an integer number (63504126).

Almost surely, 2^253008251 is an apocalyptic number.

253008251 is a deficient number, since it is larger than the sum of its proper divisors (1008253).

253008251 is a wasteful number, since it uses less digits than its factorization.

253008251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008252.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 253008251 is about 15906.2330864350. The cubic root of 253008251 is about 632.4772297781.

The spelling of 253008251 in words is "two hundred fifty-three million, eight thousand, two hundred fifty-one".