82694551 has 2 divisors, whose sum is σ = 82694552. Its totient is φ = 82694550.

The previous prime is 82694533. The next prime is 82694561. The reversal of 82694551 is 15549628.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82694551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82694531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41347275 + 41347276.

It is an arithmetic number, because the mean of its divisors is an integer number (41347276).

Almost surely, 2^82694551 is an apocalyptic number.

82694551 is a deficient number, since it is larger than the sum of its proper divisors (1).

82694551 is an equidigital number, since it uses as much as digits as its factorization.

82694551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 82694551 is about 9093.6544359240. The cubic root of 82694551 is about 435.6713129603.

The spelling of 82694551 in words is "eighty-two million, six hundred ninety-four thousand, five hundred fifty-one".