252010621 has 2 divisors, whose sum is σ = 252010622. Its totient is φ = 252010620.

The previous prime is 252010613. The next prime is 252010643. The reversal of 252010621 is 126010252.

252010621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223173721 + 28836900 = 14939^2 + 5370^2 .

It is a cyclic number.

It is not a de Polignac number, because 252010621 - 2³ = 252010613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252010691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126005310 + 126005311.

It is an arithmetic number, because the mean of its divisors is an integer number (126005311).

Almost surely, 2^252010621 is an apocalyptic number.

It is an amenable number.

252010621 is a deficient number, since it is larger than the sum of its proper divisors (1).

252010621 is an equidigital number, since it uses as much as digits as its factorization.

252010621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 252010621 is about 15874.8423929184. The cubic root of 252010621 is about 631.6448334578.

Adding to 252010621 its reverse (126010252), we get a palindrome (378020873).

The spelling of 252010621 in words is "two hundred fifty-two million, ten thousand, six hundred twenty-one".