253604465 has 8 divisors (see below), whose sum is σ = 304579968. Its totient is φ = 202713840.

The previous prime is 253604443. The next prime is 253604471. The reversal of 253604465 is 564406352.

It is a happy number.

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

It is not a de Polignac number, because 253604465 - 2⁸ = 253604209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447 + ... + 26756.

It is an arithmetic number, because the mean of its divisors is an integer number (38072496).

Almost surely, 2^253604465 is an apocalyptic number.

It is an amenable number.

253604465 is a deficient number, since it is larger than the sum of its proper divisors (50975503).

253604465 is a wasteful number, since it uses less digits than its factorization.

253604465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42439.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 253604465 is about 15924.9635792362. The cubic root of 253604465 is about 632.9736509542.

The spelling of 253604465 in words is "two hundred fifty-three million, six hundred four thousand, four hundred sixty-five".