56321265 has 128 divisors (see below), whose sum is σ = 125927424. Its totient is φ = 20908800.

The previous prime is 56321261. The next prime is 56321297. The reversal of 56321265 is 56212365.

It is not a de Polignac number, because 56321265 - 2² = 56321261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56321261) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1816800 + ... + 1816830.

It is an arithmetic number, because the mean of its divisors is an integer number (983808).

Almost surely, 2^56321265 is an apocalyptic number.

56321265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56321265 is an abundant number, since it is smaller than the sum of its proper divisors (69606159).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56321265 is a wasteful number, since it uses less digits than its factorization.

56321265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 70 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 56321265 is about 7504.7494961524. The cubic root of 56321265 is about 383.3164584044.

Subtracting from 56321265 its reverse (56212365), we obtain a square (108900 = 330²).

The spelling of 56321265 in words is "fifty-six million, three hundred twenty-one thousand, two hundred sixty-five".