252021130 has 16 divisors (see below), whose sum is σ = 477514080. Its totient is φ = 95502672.

The previous prime is 252021113. The next prime is 252021157. The reversal of 252021130 is 31120252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663024 + ... + 663403.

It is an arithmetic number, because the mean of its divisors is an integer number (29844630).

Almost surely, 2^252021130 is an apocalyptic number.

252021130 is a deficient number, since it is larger than the sum of its proper divisors (225492950).

252021130 is a wasteful number, since it uses less digits than its factorization.

252021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326453.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 252021130 is about 15875.1733848799. The cubic root of 252021130 is about 631.6536133302.

Adding to 252021130 its reverse (31120252), we get a palindrome (283141382).

The spelling of 252021130 in words is "two hundred fifty-two million, twenty-one thousand, one hundred thirty".