252215403 has 16 divisors (see below), whose sum is σ = 372337536. Its totient is φ = 150575040.

The previous prime is 252215389. The next prime is 252215413. The reversal of 252215403 is 304512252.

It is not a de Polignac number, because 252215403 - 2⁹ = 252214891 is a prime.

It is a super-2 number, since 2×252215403² = 127225219020904818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252215413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54826 + ... + 59247.

It is an arithmetic number, because the mean of its divisors is an integer number (23271096).

Almost surely, 2^252215403 is an apocalyptic number.

252215403 is a deficient number, since it is larger than the sum of its proper divisors (120122133).

252215403 is a wasteful number, since it uses less digits than its factorization.

252215403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114154.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 252215403 is about 15881.2909739731. The cubic root of 252215403 is about 631.8158771377.

Adding to 252215403 its reverse (304512252), we get a palindrome (556727655).

The spelling of 252215403 in words is "two hundred fifty-two million, two hundred fifteen thousand, four hundred three".