252120510 has 24 divisors (see below), whose sum is σ = 655513560. Its totient is φ = 67232112.

The previous prime is 252120499. The next prime is 252120581. The reversal of 252120510 is 15021252.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400580 + ... + 1400759.

It is an arithmetic number, because the mean of its divisors is an integer number (27313065).

Almost surely, 2^252120510 is an apocalyptic number.

252120510 is an abundant number, since it is smaller than the sum of its proper divisors (403393050).

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

252120510 is a wasteful number, since it uses less digits than its factorization.

252120510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801352 (or 2801349 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 252120510 is about 15878.3031209257. The cubic root of 252120510 is about 631.7366294999.

Adding to 252120510 its reverse (15021252), we get a palindrome (267141762).

The spelling of 252120510 in words is "two hundred fifty-two million, one hundred twenty thousand, five hundred ten".