82137571 has 2 divisors, whose sum is σ = 82137572. Its totient is φ = 82137570.

The previous prime is 82137527. The next prime is 82137593. The reversal of 82137571 is 17573128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82137571 - 2⁷ = 82137443 is a prime.

It is not a weakly prime, because it can be changed into another prime (82137271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41068785 + 41068786.

It is an arithmetic number, because the mean of its divisors is an integer number (41068786).

Almost surely, 2^82137571 is an apocalyptic number.

82137571 is a deficient number, since it is larger than the sum of its proper divisors (1).

82137571 is an equidigital number, since it uses as much as digits as its factorization.

82137571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 82137571 is about 9062.9780425642. The cubic root of 82137571 is about 434.6909700139.

The spelling of 82137571 in words is "eighty-two million, one hundred thirty-seven thousand, five hundred seventy-one".