52991318 has 4 divisors (see below), whose sum is σ = 79486980. Its totient is φ = 26495658.

The previous prime is 52991317. The next prime is 52991353. The reversal of 52991318 is 81319925.

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 (52991317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13247828 + ... + 13247831.

It is an arithmetic number, because the mean of its divisors is an integer number (19871745).

Almost surely, 2^52991318 is an apocalyptic number.

52991318 is a deficient number, since it is larger than the sum of its proper divisors (26495662).

52991318 is a wasteful number, since it uses less digits than its factorization.

52991318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26495661.

The product of its digits is 19440, while the sum is 38.

The square root of 52991318 is about 7279.5135826510. The cubic root of 52991318 is about 375.6080635644.

The spelling of 52991318 in words is "fifty-two million, nine hundred ninety-one thousand, three hundred eighteen".