252221623 has 2 divisors, whose sum is σ = 252221624. Its totient is φ = 252221622.

The previous prime is 252221621. The next prime is 252221633. The reversal of 252221623 is 326122252.

It is a happy number.

252221623 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 is a cyclic number.

It is not a de Polignac number, because 252221623 - 2¹ = 252221621 is a prime.

Together with 252221621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252221621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126110811 + 126110812.

It is an arithmetic number, because the mean of its divisors is an integer number (126110812).

Almost surely, 2^252221623 is an apocalyptic number.

252221623 is a deficient number, since it is larger than the sum of its proper divisors (1).

252221623 is an equidigital number, since it uses as much as digits as its factorization.

252221623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 252221623 is about 15881.4868006746. The cubic root of 252221623 is about 631.8210709289.

Adding to 252221623 its reverse (326122252), we get a palindrome (578343875).

The spelling of 252221623 in words is "two hundred fifty-two million, two hundred twenty-one thousand, six hundred twenty-three".