253471 has 4 divisors (see below), whose sum is σ = 258912. Its totient is φ = 248032.

The previous prime is 253469. The next prime is 253481. The reversal of 253471 is 174352.

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 253471 - 2¹ = 253469 is a prime.

It is a super-3 number, since 3×253471³ = 48854670596418333, which contains 333 as substring.

It is a Duffinian number.

253471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (64728).

2²⁵³⁴⁷¹ is an apocalyptic number.

253471 is a deficient number, since it is larger than the sum of its proper divisors (5441).

253471 is an equidigital number, since it uses as much as digits as its factorization.

253471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440.

The product of its digits is 840, while the sum is 22.

The square root of 253471 is about 503.4590350763. The cubic root of 253471 is about 63.2862592641.

The spelling of 253471 in words is "two hundred fifty-three thousand, four hundred seventy-one".