252201640 has 16 divisors (see below), whose sum is σ = 567453780. Its totient is φ = 100880640.

The previous prime is 252201637. The next prime is 252201667. The reversal of 252201640 is 46102252.

It can be written as a sum of positive squares in 2 ways, for example, as 250335684 + 1865956 = 15822^2 + 1366^2 .

It is an unprimeable number.

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, 3152481 + ... + 3152560.

Almost surely, 2^252201640 is an apocalyptic number.

252201640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252201640 is an abundant number, since it is smaller than the sum of its proper divisors (315252140).

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

252201640 is a wasteful number, since it uses less digits than its factorization.

252201640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305052 (or 6305048 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 252201640 is about 15880.8576594591. The cubic root of 252201640 is about 631.8043845273.

Adding to 252201640 its reverse (46102252), we get a palindrome (298303892).

The spelling of 252201640 in words is "two hundred fifty-two million, two hundred one thousand, six hundred forty".