71022997 has 2 divisors, whose sum is σ = 71022998. Its totient is φ = 71022996.

The previous prime is 71022989. The next prime is 71023003. The reversal of 71022997 is 79922017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38862756 + 32160241 = 6234^2 + 5671^2 .

It is a cyclic number.

It is not a de Polignac number, because 71022997 - 2³ = 71022989 is a prime.

It is a super-2 number, since 2×71022997² = 10088532205724018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71022937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35511498 + 35511499.

It is an arithmetic number, because the mean of its divisors is an integer number (35511499).

Almost surely, 2^71022997 is an apocalyptic number.

It is an amenable number.

71022997 is a deficient number, since it is larger than the sum of its proper divisors (1).

71022997 is an equidigital number, since it uses as much as digits as its factorization.

71022997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 71022997 is about 8427.5142835833. The cubic root of 71022997 is about 414.1264773396.

The spelling of 71022997 in words is "seventy-one million, twenty-two thousand, nine hundred ninety-seven".