82456457 has 2 divisors, whose sum is σ = 82456458. Its totient is φ = 82456456.

The previous prime is 82456369. The next prime is 82456481. The reversal of 82456457 is 75465428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 9114361 = 8564^2 + 3019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82456457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82458457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41228228 + 41228229.

It is an arithmetic number, because the mean of its divisors is an integer number (41228229).

Almost surely, 2^82456457 is an apocalyptic number.

It is an amenable number.

82456457 is a deficient number, since it is larger than the sum of its proper divisors (1).

82456457 is an equidigital number, since it uses as much as digits as its factorization.

82456457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 41.

The square root of 82456457 is about 9080.5537826721. The cubic root of 82456457 is about 435.2527830102.

The spelling of 82456457 in words is "eighty-two million, four hundred fifty-six thousand, four hundred fifty-seven".