522720126 has 48 divisors (see below), whose sum is σ = 1209326976. Its totient is φ = 162782928.

The previous prime is 522720101. The next prime is 522720137. The reversal of 522720126 is 621027225.

It is a self number, because there is not a number n which added to its sum of digits gives 522720126.

It is a congruent number.

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, 3121 + ... + 32483.

It is an arithmetic number, because the mean of its divisors is an integer number (25194312).

Almost surely, 2^522720126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522720126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604663488).

522720126 is an abundant number, since it is smaller than the sum of its proper divisors (686606850).

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

522720126 is a wasteful number, since it uses less digits than its factorization.

522720126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29437 (or 29434 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 522720126 is about 22863.0734154444. The cubic root of 522720126 is about 805.5448780751.

The spelling of 522720126 in words is "five hundred twenty-two million, seven hundred twenty thousand, one hundred twenty-six".