253571 has 4 divisors (see below), whose sum is σ = 259512. Its totient is φ = 247632.

The previous prime is 253567. The next prime is 253573. The reversal of 253571 is 175352.

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 253571 - 2² = 253567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2906 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (64878).

2²⁵³⁵⁷¹ is an apocalyptic number.

253571 is a deficient number, since it is larger than the sum of its proper divisors (5941).

253571 is an equidigital number, since it uses as much as digits as its factorization.

253571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5940.

The product of its digits is 1050, while the sum is 23.

The square root of 253571 is about 503.5583382290. The cubic root of 253571 is about 63.2945807865.

The spelling of 253571 in words is "two hundred fifty-three thousand, five hundred seventy-one".