82751657 has 2 divisors, whose sum is σ = 82751658. Its totient is φ = 82751656.

The previous prime is 82751639. The next prime is 82751659. The reversal of 82751657 is 75615728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79049881 + 3701776 = 8891^2 + 1924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82751657 is a prime.

Together with 82751659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82751659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41375828 + 41375829.

It is an arithmetic number, because the mean of its divisors is an integer number (41375829).

Almost surely, 2^82751657 is an apocalyptic number.

It is an amenable number.

82751657 is a deficient number, since it is larger than the sum of its proper divisors (1).

82751657 is an equidigital number, since it uses as much as digits as its factorization.

82751657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 41.

The square root of 82751657 is about 9096.7937758311. The cubic root of 82751657 is about 435.7715764034.

The spelling of 82751657 in words is "eighty-two million, seven hundred fifty-one thousand, six hundred fifty-seven".