253491294 has 32 divisors (see below), whose sum is σ = 581414400. Its totient is φ = 72175392.

The previous prime is 253491289. The next prime is 253491299. The reversal of 253491294 is 492194352.

It is an interprime number because it is at equal distance from previous prime (253491289) and next prime (253491299).

It is a super-2 number, since 2×253491294² = 128515672267588872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253491299) 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, 2007 + ... + 22605.

It is an arithmetic number, because the mean of its divisors is an integer number (18169200).

Almost surely, 2^253491294 is an apocalyptic number.

253491294 is an abundant number, since it is smaller than the sum of its proper divisors (327923106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253491294 is a wasteful number, since it uses less digits than its factorization.

253491294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20904.

The product of its digits is 77760, while the sum is 39.

The square root of 253491294 is about 15921.4099250035. The cubic root of 253491294 is about 632.8794821084.

The spelling of 253491294 in words is "two hundred fifty-three million, four hundred ninety-one thousand, two hundred ninety-four".