253266621 has 16 divisors (see below), whose sum is σ = 349659648. Its totient is φ = 162892800.

The previous prime is 253266613. The next prime is 253266647. The reversal of 253266621 is 126662352.

It is not a de Polignac number, because 253266621 - 2³ = 253266613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253266121) 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, 27301 + ... + 35381.

It is an arithmetic number, because the mean of its divisors is an integer number (21853728).

Almost surely, 2^253266621 is an apocalyptic number.

It is an amenable number.

253266621 is a deficient number, since it is larger than the sum of its proper divisors (96393027).

253266621 is a wasteful number, since it uses less digits than its factorization.

253266621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8452.

The product of its digits is 25920, while the sum is 33.

The square root of 253266621 is about 15914.3526729805. The cubic root of 253266621 is about 632.6924500951.

The spelling of 253266621 in words is "two hundred fifty-three million, two hundred sixty-six thousand, six hundred twenty-one".