253456765 has 8 divisors (see below), whose sum is σ = 304243200. Its totient is φ = 202702032.

The previous prime is 253456747. The next prime is 253456811. The reversal of 253456765 is 567654352.

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

It is a cyclic number.

It is not a de Polignac number, because 253456765 - 2²¹ = 251359613 is a prime.

It is a congruent 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, 16536 + ... + 27934.

It is an arithmetic number, because the mean of its divisors is an integer number (38030400).

Almost surely, 2^253456765 is an apocalyptic number.

It is an amenable number.

253456765 is a deficient number, since it is larger than the sum of its proper divisors (50786435).

253456765 is a wasteful number, since it uses less digits than its factorization.

253456765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851.

The product of its digits is 756000, while the sum is 43.

The square root of 253456765 is about 15920.3255305914. The cubic root of 253456765 is about 632.8507451742.

The spelling of 253456765 in words is "two hundred fifty-three million, four hundred fifty-six thousand, seven hundred sixty-five".