523405465 has 24 divisors (see below), whose sum is σ = 696797640. Its totient is φ = 377118720.

The previous prime is 523405453. The next prime is 523405507. The reversal of 523405465 is 564504325.

It can be written as a sum of positive squares in 4 ways, for example, as 254051721 + 269353744 = 15939^2 + 16412^2 .

It is not a de Polignac number, because 523405465 - 2²¹ = 521308313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 523405465.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61977 + ... + 69913.

It is an arithmetic number, because the mean of its divisors is an integer number (29033235).

Almost surely, 2^523405465 is an apocalyptic number.

523405465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

523405465 is a deficient number, since it is larger than the sum of its proper divisors (173392175).

523405465 is a wasteful number, since it uses less digits than its factorization.

523405465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073 (or 8062 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 523405465 is about 22878.0564078332. The cubic root of 523405465 is about 805.8967746226.

The spelling of 523405465 in words is "five hundred twenty-three million, four hundred five thousand, four hundred sixty-five".