252102522 has 64 divisors (see below), whose sum is σ = 593526528. Its totient is φ = 69888000.

The previous prime is 252102511. The next prime is 252102523. The reversal of 252102522 is 225201252.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (252102523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483622 + ... + 484142.

It is an arithmetic number, because the mean of its divisors is an integer number (9273852).

Almost surely, 2^252102522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252102522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296763264).

252102522 is an abundant number, since it is smaller than the sum of its proper divisors (341424006).

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

252102522 is a wasteful number, since it uses less digits than its factorization.

252102522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 252102522 is about 15877.7366774991. The cubic root of 252102522 is about 631.7216050066.

Adding to 252102522 its reverse (225201252), we get a palindrome (477303774).

The spelling of 252102522 in words is "two hundred fifty-two million, one hundred two thousand, five hundred twenty-two".