252805530 has 32 divisors (see below), whose sum is σ = 614419200. Its totient is φ = 66560832.

The previous prime is 252805519. The next prime is 252805537. The reversal of 252805530 is 35508252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (252805537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50965 + ... + 55704.

It is an arithmetic number, because the mean of its divisors is an integer number (19200600).

Almost surely, 2^252805530 is an apocalyptic number.

252805530 is an abundant number, since it is smaller than the sum of its proper divisors (361613670).

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

252805530 is a wasteful number, since it uses less digits than its factorization.

252805530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106758.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 252805530 is about 15899.8594333409. The cubic root of 252805530 is about 632.3082620660.

The spelling of 252805530 in words is "two hundred fifty-two million, eight hundred five thousand, five hundred thirty".