523866252 has 144 divisors (see below), whose sum is σ = 1612343040. Its totient is φ = 130854528.

The previous prime is 523866229. The next prime is 523866253. The reversal of 523866252 is 252668325.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 523866252.

It is not an unprimeable number, because it can be changed into a prime (523866253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143433 + ... + 147039.

Almost surely, 2^523866252 is an apocalyptic number.

523866252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523866252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806171520).

523866252 is an abundant number, since it is smaller than the sum of its proper divisors (1088476788).

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

523866252 is a wasteful number, since it uses less digits than its factorization.

523866252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3651 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 523866252 is about 22888.1246938232. The cubic root of 523866252 is about 806.1331992569.

The spelling of 523866252 in words is "five hundred twenty-three million, eight hundred sixty-six thousand, two hundred fifty-two".