52212515 has 4 divisors (see below), whose sum is σ = 62655024. Its totient is φ = 41770008.

The previous prime is 52212493. The next prime is 52212521. The reversal of 52212515 is 51521225.

52212515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 52212515 - 2¹² = 52208419 is a prime.

It is a super-2 number, since 2×52212515² = 5452293445250450, which contains 22 as substring.

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, 5221247 + ... + 5221256.

It is an arithmetic number, because the mean of its divisors is an integer number (15663756).

Almost surely, 2^52212515 is an apocalyptic number.

52212515 is a deficient number, since it is larger than the sum of its proper divisors (10442509).

52212515 is a wasteful number, since it uses less digits than its factorization.

52212515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10442508.

The product of its digits is 1000, while the sum is 23.

The square root of 52212515 is about 7225.8227905201. The cubic root of 52212515 is about 373.7588954755.

The spelling of 52212515 in words is "fifty-two million, two hundred twelve thousand, five hundred fifteen".