253415465 has 8 divisors (see below), whose sum is σ = 311515848. Its totient is φ = 197787520.

The previous prime is 253415453. The next prime is 253415473. The reversal of 253415465 is 564514352.

It can be written as a sum of positive squares in 4 ways, for example, as 1336336 + 252079129 = 1156^2 + 15877^2 .

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

It is not a de Polignac number, because 253415465 - 2²⁰ = 252366889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 617882 + ... + 618291.

It is an arithmetic number, because the mean of its divisors is an integer number (38939481).

Almost surely, 2^253415465 is an apocalyptic number.

It is an amenable number.

253415465 is a deficient number, since it is larger than the sum of its proper divisors (58100383).

253415465 is a wasteful number, since it uses less digits than its factorization.

253415465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236219.

The product of its digits is 72000, while the sum is 35.

The square root of 253415465 is about 15919.0283937180. The cubic root of 253415465 is about 632.8163696131.

The spelling of 253415465 in words is "two hundred fifty-three million, four hundred fifteen thousand, four hundred sixty-five".