252445530 has 16 divisors (see below), whose sum is σ = 605869344. Its totient is φ = 67318800.

The previous prime is 252445517. The next prime is 252445537. The reversal of 252445530 is 35544252.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 8414851 = 252445530 / (2 + 5 + 2 + 4 + 4 + 5 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (252445537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4207396 + ... + 4207455.

It is an arithmetic number, because the mean of its divisors is an integer number (37866834).

Almost surely, 2^252445530 is an apocalyptic number.

252445530 is an abundant number, since it is smaller than the sum of its proper divisors (353423814).

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

252445530 is a wasteful number, since it uses less digits than its factorization.

252445530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414861.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 252445530 is about 15888.5345453884. The cubic root of 252445530 is about 632.0079797235.

Adding to 252445530 its reverse (35544252), we get a palindrome (287989782).

The spelling of 252445530 in words is "two hundred fifty-two million, four hundred forty-five thousand, five hundred thirty".