253860321 has 16 divisors (see below), whose sum is σ = 397656000. Its totient is φ = 142019520.

The previous prime is 253860317. The next prime is 253860329. The reversal of 253860321 is 123068352.

253860321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253860321 - 2² = 253860317 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253860329) 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, 295446 + ... + 296303.

It is an arithmetic number, because the mean of its divisors is an integer number (24853500).

Almost surely, 2^253860321 is an apocalyptic number.

It is an amenable number.

253860321 is a deficient number, since it is larger than the sum of its proper divisors (143795679).

253860321 is a wasteful number, since it uses less digits than its factorization.

253860321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591776.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 253860321 is about 15932.9947279223. The cubic root of 253860321 is about 633.1864438353.

The spelling of 253860321 in words is "two hundred fifty-three million, eight hundred sixty thousand, three hundred twenty-one".