210515252 has 6 divisors (see below), whose sum is σ = 368401698. Its totient is φ = 105257624.

The previous prime is 210515243. The next prime is 210515257. The reversal of 210515252 is 252515012.

210515252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 155102116 + 55413136 = 12454^2 + 7444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210515257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26314403 + ... + 26314410.

It is an arithmetic number, because the mean of its divisors is an integer number (61400283).

Almost surely, 2^210515252 is an apocalyptic number.

It is an amenable number.

210515252 is a deficient number, since it is larger than the sum of its proper divisors (157886446).

210515252 is a wasteful number, since it uses less digits than its factorization.

210515252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52628817 (or 52628815 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 210515252 is about 14509.1437376573. The cubic root of 210515252 is about 594.8779280206.

The spelling of 210515252 in words is "two hundred ten million, five hundred fifteen thousand, two hundred fifty-two".