252415505 has 4 divisors (see below), whose sum is σ = 302898612. Its totient is φ = 201932400.

The previous prime is 252415469. The next prime is 252415519. The reversal of 252415505 is 505514252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114211969 + 138203536 = 10687^2 + 11756^2 .

It is not a de Polignac number, because 252415505 - 2¹⁶ = 252349969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25241546 + ... + 25241555.

It is an arithmetic number, because the mean of its divisors is an integer number (75724653).

Almost surely, 2^252415505 is an apocalyptic number.

It is an amenable number.

252415505 is a deficient number, since it is larger than the sum of its proper divisors (50483107).

252415505 is an equidigital number, since it uses as much as digits as its factorization.

252415505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50483106.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 252415505 is about 15887.5896535629. The cubic root of 252415505 is about 631.9829224475.

Adding to 252415505 its reverse (505514252), we get a palindrome (757929757).

The spelling of 252415505 in words is "two hundred fifty-two million, four hundred fifteen thousand, five hundred five".