253783 has 8 divisors (see below), whose sum is σ = 275120. Its totient is φ = 233928.

The previous prime is 253777. The next prime is 253787. The reversal of 253783 is 387352.

It is not a de Polignac number, because 253783 - 2⁵ = 253751 is a prime.

It is a super-2 number, since 2×253783² = 128811622178, which contains 22 as substring.

Its product of digits (5040) is a multiple of the sum of its prime divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6841 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (34390).

2²⁵³⁷⁸³ is an apocalyptic number.

253783 is a deficient number, since it is larger than the sum of its proper divisors (21337).

253783 is an frugal number, since it uses more digits than its factorization.

253783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 56 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 253783 is about 503.7687961754. The cubic root of 253783 is about 63.3122151813.

The spelling of 253783 in words is "two hundred fifty-three thousand, seven hundred eighty-three".