253971 has 6 divisors (see below), whose sum is σ = 366860. Its totient is φ = 169308.

The previous prime is 253969. The next prime is 253987. The reversal of 253971 is 179352.

It is not a de Polignac number, because 253971 - 2¹ = 253969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14101 + ... + 14118.

2²⁵³⁹⁷¹ is an apocalyptic number.

253971 is a deficient number, since it is larger than the sum of its proper divisors (112889).

253971 is a wasteful number, since it uses less digits than its factorization.

253971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28225 (or 28222 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 253971 is about 503.9553551655. The cubic root of 253971 is about 63.3278450153.

The spelling of 253971 in words is "two hundred fifty-three thousand, nine hundred seventy-one".