252236621 has 8 divisors (see below), whose sum is σ = 310445184. Its totient is φ = 199571760.

The previous prime is 252236617. The next prime is 252236629. The reversal of 252236621 is 126632252.

252236621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252236621 - 2² = 252236617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252236629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385825 + ... + 1386006.

It is an arithmetic number, because the mean of its divisors is an integer number (38805648).

Almost surely, 2^252236621 is an apocalyptic number.

It is an amenable number.

252236621 is a deficient number, since it is larger than the sum of its proper divisors (58208563).

252236621 is a wasteful number, since it uses less digits than its factorization.

252236621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771851.

The product of its digits is 8640, while the sum is 29.

The square root of 252236621 is about 15881.9589786651. The cubic root of 252236621 is about 631.8335941277.

Adding to 252236621 its reverse (126632252), we get a palindrome (378868873).

The spelling of 252236621 in words is "two hundred fifty-two million, two hundred thirty-six thousand, six hundred twenty-one".