82916557 has 2 divisors, whose sum is σ = 82916558. Its totient is φ = 82916556.

The previous prime is 82916527. The next prime is 82916591. The reversal of 82916557 is 75561928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 724201 = 9066^2 + 851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82916557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82916527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41458278 + 41458279.

It is an arithmetic number, because the mean of its divisors is an integer number (41458279).

Almost surely, 2^82916557 is an apocalyptic number.

It is an amenable number.

82916557 is a deficient number, since it is larger than the sum of its proper divisors (1).

82916557 is an equidigital number, since it uses as much as digits as its factorization.

82916557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 82916557 is about 9105.8528979992. The cubic root of 82916557 is about 436.0608397130.

The spelling of 82916557 in words is "eighty-two million, nine hundred sixteen thousand, five hundred fifty-seven".