253484991 has 16 divisors (see below), whose sum is σ = 375804000. Its totient is φ = 168868224.

The previous prime is 253484983. The next prime is 253485007. The reversal of 253484991 is 199484352.

It is not a de Polignac number, because 253484991 - 2³ = 253484983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253484921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50215 + ... + 55031.

It is an arithmetic number, because the mean of its divisors is an integer number (23487750).

Almost surely, 2^253484991 is an apocalyptic number.

253484991 is a deficient number, since it is larger than the sum of its proper divisors (122319009).

253484991 is a wasteful number, since it uses less digits than its factorization.

253484991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775 (or 6769 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 253484991 is about 15921.2119827606. The cubic root of 253484991 is about 632.8742365996.

The spelling of 253484991 in words is "two hundred fifty-three million, four hundred eighty-four thousand, nine hundred ninety-one".