253116399 has 4 divisors (see below), whose sum is σ = 337488536. Its totient is φ = 168744264.

The previous prime is 253116397. The next prime is 253116401. The reversal of 253116399 is 993611352.

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

It is an interprime number because it is at equal distance from previous prime (253116397) and next prime (253116401).

It is not a de Polignac number, because 253116399 - 2¹ = 253116397 is a prime.

It is a super-2 number, since 2×253116399² = 128135822885454402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253116397) 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, 42186064 + ... + 42186069.

It is an arithmetic number, because the mean of its divisors is an integer number (84372134).

Almost surely, 2^253116399 is an apocalyptic number.

253116399 is a deficient number, since it is larger than the sum of its proper divisors (84372137).

253116399 is an equidigital number, since it uses as much as digits as its factorization.

253116399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84372136.

The product of its digits is 43740, while the sum is 39.

The square root of 253116399 is about 15909.6322710489. The cubic root of 253116399 is about 632.5673340909.

The spelling of 253116399 in words is "two hundred fifty-three million, one hundred sixteen thousand, three hundred ninety-nine".