253457 has 4 divisors (see below), whose sum is σ = 254976. Its totient is φ = 251940.

The previous prime is 253447. The next prime is 253469. The reversal of 253457 is 754352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253457 - 2¹⁴ = 237073 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253457.

It is not an unprimeable number, because it can be changed into a prime (253417) 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, 473 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (63744).

2²⁵³⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

253457 is a deficient number, since it is larger than the sum of its proper divisors (1519).

253457 is a wasteful number, since it uses less digits than its factorization.

253457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518.

The product of its digits is 4200, while the sum is 26.

The square root of 253457 is about 503.4451310719. The cubic root of 253457 is about 63.2850940763.

It can be divided in two parts, 25345 and 7, that added together give a palindrome (25352).

The spelling of 253457 in words is "two hundred fifty-three thousand, four hundred fifty-seven".