253483991 has 8 divisors (see below), whose sum is σ = 268646544. Its totient is φ = 238349440.

The previous prime is 253483939. The next prime is 253484009. The reversal of 253483991 is 199384352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253483991 - 2²⁶ = 186375127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253483091) 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, 13361 + ... + 26181.

It is an arithmetic number, because the mean of its divisors is an integer number (33580818).

Almost surely, 2^253483991 is an apocalyptic number.

253483991 is a deficient number, since it is larger than the sum of its proper divisors (15162553).

253483991 is a wasteful number, since it uses less digits than its factorization.

253483991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14001.

The product of its digits is 233280, while the sum is 44.

The square root of 253483991 is about 15921.1805780853. The cubic root of 253483991 is about 632.8734043675.

The spelling of 253483991 in words is "two hundred fifty-three million, four hundred eighty-three thousand, nine hundred ninety-one".