52807818 has 32 divisors (see below), whose sum is σ = 124600320. Its totient is φ = 14600880.

The previous prime is 52807813. The next prime is 52807829. The reversal of 52807818 is 81870825.

It is a super-2 number, since 2×52807818² = 5577331283842248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (52807813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18978 + ... + 21581.

It is an arithmetic number, because the mean of its divisors is an integer number (3893760).

Almost surely, 2^52807818 is an apocalyptic number.

52807818 is an abundant number, since it is smaller than the sum of its proper divisors (71792502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52807818 is a wasteful number, since it uses less digits than its factorization.

52807818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40602.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 52807818 is about 7266.8987883416. The cubic root of 52807818 is about 375.1740063567.

The spelling of 52807818 in words is "fifty-two million, eight hundred seven thousand, eight hundred eighteen".