523265321 has 8 divisors (see below), whose sum is σ = 554253480. Its totient is φ = 492300288.

The previous prime is 523265311. The next prime is 523265333. The reversal of 523265321 is 123562325.

It can be written as a sum of positive squares in 4 ways, for example, as 391842025 + 131423296 = 19795^2 + 11464^2 .

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 523265321 - 2⁶ = 523265257 is a prime.

It is a super-2 number, since 2×523265321² = 547613192322466082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523265311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67325 + ... + 74693.

It is an arithmetic number, because the mean of its divisors is an integer number (69281685).

Almost surely, 2^523265321 is an apocalyptic number.

It is an amenable number.

523265321 is a deficient number, since it is larger than the sum of its proper divisors (30988159).

523265321 is a wasteful number, since it uses less digits than its factorization.

523265321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563.

The product of its digits is 10800, while the sum is 29.

The square root of 523265321 is about 22874.9933551903. The cubic root of 523265321 is about 805.8248407925.

The spelling of 523265321 in words is "five hundred twenty-three million, two hundred sixty-five thousand, three hundred twenty-one".