252420445 has 16 divisors (see below), whose sum is σ = 314984448. Its totient is φ = 193979520.

The previous prime is 252420433. The next prime is 252420451. The reversal of 252420445 is 544024252.

It is not a de Polignac number, because 252420445 - 2¹³ = 252412253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15292 + ... + 27178.

It is an arithmetic number, because the mean of its divisors is an integer number (19686528).

Almost surely, 2^252420445 is an apocalyptic number.

It is an amenable number.

252420445 is a deficient number, since it is larger than the sum of its proper divisors (62564003).

252420445 is a wasteful number, since it uses less digits than its factorization.

252420445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12060.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 252420445 is about 15887.7451200603. The cubic root of 252420445 is about 631.9870452467.

Adding to 252420445 its reverse (544024252), we get a palindrome (796444697).

The spelling of 252420445 in words is "two hundred fifty-two million, four hundred twenty thousand, four hundred forty-five".