52257015 has 16 divisors (see below), whose sum is σ = 92901600. Its totient is φ = 27870336.

The previous prime is 52256983. The next prime is 52257017. The reversal of 52257015 is 51075225.

It is a happy number.

It is not a de Polignac number, because 52257015 - 2⁵ = 52256983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 52257015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52257017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193410 + ... + 193679.

It is an arithmetic number, because the mean of its divisors is an integer number (5806350).

Almost surely, 2^52257015 is an apocalyptic number.

52257015 is a deficient number, since it is larger than the sum of its proper divisors (40644585).

52257015 is a wasteful number, since it uses less digits than its factorization.

52257015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387103 (or 387097 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 52257015 is about 7228.9013688112. The cubic root of 52257015 is about 373.8650484922.

The spelling of 52257015 in words is "fifty-two million, two hundred fifty-seven thousand, fifteen".