52815286 has 4 divisors (see below), whose sum is σ = 79222932. Its totient is φ = 26407642.

The previous prime is 52815283. The next prime is 52815361. The reversal of 52815286 is 68251825.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52815283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13203820 + ... + 13203823.

It is an arithmetic number, because the mean of its divisors is an integer number (19805733).

Almost surely, 2^52815286 is an apocalyptic number.

52815286 is a deficient number, since it is larger than the sum of its proper divisors (26407646).

52815286 is a wasteful number, since it uses less digits than its factorization.

52815286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26407645.

The product of its digits is 38400, while the sum is 37.

The square root of 52815286 is about 7267.4126069737. The cubic root of 52815286 is about 375.1916910325.

The spelling of 52815286 in words is "fifty-two million, eight hundred fifteen thousand, two hundred eighty-six".