252515290 has 8 divisors (see below), whose sum is σ = 454527540. Its totient is φ = 101006112.

The previous prime is 252515273. The next prime is 252515293. The reversal of 252515290 is 92515252.

It can be written as a sum of positive squares in 2 ways, for example, as 232166169 + 20349121 = 15237^2 + 4511^2 .

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

It is not an unprimeable number, because it can be changed into a prime (252515293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12625755 + ... + 12625774.

Almost surely, 2^252515290 is an apocalyptic number.

252515290 is a deficient number, since it is larger than the sum of its proper divisors (202012250).

252515290 is a wasteful number, since it uses less digits than its factorization.

252515290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25251536.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 252515290 is about 15890.7296874624. The cubic root of 252515290 is about 632.0661900579.

The spelling of 252515290 in words is "two hundred fifty-two million, five hundred fifteen thousand, two hundred ninety".