252520140 has 48 divisors (see below), whose sum is σ = 716754528. Its totient is φ = 66415104.

The previous prime is 252520129. The next prime is 252520157. The reversal of 252520140 is 41025252.

It is a happy number.

252520140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×252520140² = 127532842211239200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24447 + ... + 33206.

It is an arithmetic number, because the mean of its divisors is an integer number (14932386).

Almost surely, 2^252520140 is an apocalyptic number.

252520140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252520140 is an abundant number, since it is smaller than the sum of its proper divisors (464234388).

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

252520140 is a wasteful number, since it uses less digits than its factorization.

252520140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57738 (or 57736 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 252520140 is about 15890.8822914274. The cubic root of 252520140 is about 632.0702366794.

Adding to 252520140 its reverse (41025252), we get a palindrome (293545392).

The spelling of 252520140 in words is "two hundred fifty-two million, five hundred twenty thousand, one hundred forty".