97782571 has 2 divisors, whose sum is σ = 97782572. Its totient is φ = 97782570.

The previous prime is 97782563. The next prime is 97782593. The reversal of 97782571 is 17528779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97782571 - 2³ = 97782563 is a prime.

It is a super-2 number, since 2×97782571² = 19122862382740082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97783571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48891285 + 48891286.

It is an arithmetic number, because the mean of its divisors is an integer number (48891286).

Almost surely, 2^97782571 is an apocalyptic number.

97782571 is a deficient number, since it is larger than the sum of its proper divisors (1).

97782571 is an equidigital number, since it uses as much as digits as its factorization.

97782571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 46.

The square root of 97782571 is about 9888.5070157228. The cubic root of 97782571 is about 460.7024098764.

The spelling of 97782571 in words is "ninety-seven million, seven hundred eighty-two thousand, five hundred seventy-one".