52857215 has 16 divisors (see below), whose sum is σ = 64864800. Its totient is φ = 41336832.

The previous prime is 52857179. The next prime is 52857223. The reversal of 52857215 is 51275825.

It is a cyclic number.

It is not a de Polignac number, because 52857215 - 2¹⁸ = 52595071 is a prime.

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, 68351 + ... + 69119.

It is an arithmetic number, because the mean of its divisors is an integer number (4054050).

Almost surely, 2^52857215 is an apocalyptic number.

52857215 is a deficient number, since it is larger than the sum of its proper divisors (12007585).

52857215 is a wasteful number, since it uses less digits than its factorization.

52857215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 28000, while the sum is 35.

The square root of 52857215 is about 7270.2967614809. The cubic root of 52857215 is about 375.2909504987.

The spelling of 52857215 in words is "fifty-two million, eight hundred fifty-seven thousand, two hundred fifteen".