253163783 has 4 divisors (see below), whose sum is σ = 264170928. Its totient is φ = 242156640.

The previous prime is 253163773. The next prime is 253163789. The reversal of 253163783 is 387361352.

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 253163783 - 2²⁰ = 252115207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253163789) 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, 5503538 + ... + 5503583.

It is an arithmetic number, because the mean of its divisors is an integer number (66042732).

Almost surely, 2^253163783 is an apocalyptic number.

253163783 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253163783 is a deficient number, since it is larger than the sum of its proper divisors (11007145).

253163783 is a wasteful number, since it uses less digits than its factorization.

253163783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007144.

The product of its digits is 90720, while the sum is 38.

The square root of 253163783 is about 15911.1213621165. The cubic root of 253163783 is about 632.6068043379.

The spelling of 253163783 in words is "two hundred fifty-three million, one hundred sixty-three thousand, seven hundred eighty-three".