253117894 has 4 divisors (see below), whose sum is σ = 379676844. Its totient is φ = 126558946.

The previous prime is 253117871. The next prime is 253117927. The reversal of 253117894 is 498711352.

253117894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63279472 + ... + 63279475.

It is an arithmetic number, because the mean of its divisors is an integer number (94919211).

Almost surely, 2^253117894 is an apocalyptic number.

253117894 is a deficient number, since it is larger than the sum of its proper divisors (126558950).

253117894 is a wasteful number, since it uses less digits than its factorization.

253117894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126558949.

The product of its digits is 60480, while the sum is 40.

The square root of 253117894 is about 15909.6792550950. The cubic root of 253117894 is about 632.5685794814.

The spelling of 253117894 in words is "two hundred fifty-three million, one hundred seventeen thousand, eight hundred ninety-four".