82717451 has 2 divisors, whose sum is σ = 82717452. Its totient is φ = 82717450.

The previous prime is 82717441. The next prime is 82717477. The reversal of 82717451 is 15471728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82717451 - 2²² = 78523147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (82717441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41358725 + 41358726.

It is an arithmetic number, because the mean of its divisors is an integer number (41358726).

Almost surely, 2^82717451 is an apocalyptic number.

82717451 is a deficient number, since it is larger than the sum of its proper divisors (1).

82717451 is an equidigital number, since it uses as much as digits as its factorization.

82717451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 35.

The square root of 82717451 is about 9094.9134685273. The cubic root of 82717451 is about 435.7115250103.

The spelling of 82717451 in words is "eighty-two million, seven hundred seventeen thousand, four hundred fifty-one".