52817813 has 2 divisors, whose sum is σ = 52817814. Its totient is φ = 52817812.

The previous prime is 52817789. The next prime is 52817857. The reversal of 52817813 is 31871825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43533604 + 9284209 = 6598^2 + 3047^2 .

It is a cyclic number.

It is not a de Polignac number, because 52817813 - 2⁶ = 52817749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52817873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26408906 + 26408907.

It is an arithmetic number, because the mean of its divisors is an integer number (26408907).

Almost surely, 2^52817813 is an apocalyptic number.

It is an amenable number.

52817813 is a deficient number, since it is larger than the sum of its proper divisors (1).

52817813 is an equidigital number, since it uses as much as digits as its factorization.

52817813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 52817813 is about 7267.5864631940. The cubic root of 52817813 is about 375.1976747438.

The spelling of 52817813 in words is "fifty-two million, eight hundred seventeen thousand, eight hundred thirteen".