252521024 has 28 divisors (see below), whose sum is σ = 572682624. Its totient is φ = 108223104.

The previous prime is 252521023. The next prime is 252521033. The reversal of 252521024 is 420125252.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (252521023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281384 + ... + 282279.

Almost surely, 2^252521024 is an apocalyptic number.

It is an amenable number.

252521024 is an abundant number, since it is smaller than the sum of its proper divisors (320161600).

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

252521024 is an equidigital number, since it uses as much as digits as its factorization.

252521024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563682 (or 563672 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 252521024 is about 15890.9101060952. The cubic root of 252521024 is about 632.0709742436.

Adding to 252521024 its reverse (420125252), we get a palindrome (672646276).

The spelling of 252521024 in words is "two hundred fifty-two million, five hundred twenty-one thousand, twenty-four".