97211047 has 2 divisors, whose sum is σ = 97211048. Its totient is φ = 97211046.

The previous prime is 97210991. The next prime is 97211057. The reversal of 97211047 is 74011279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97211047 - 2²³ = 88822439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97211057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48605523 + 48605524.

It is an arithmetic number, because the mean of its divisors is an integer number (48605524).

Almost surely, 2^97211047 is an apocalyptic number.

97211047 is a deficient number, since it is larger than the sum of its proper divisors (1).

97211047 is an equidigital number, since it uses as much as digits as its factorization.

97211047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 97211047 is about 9859.5662683508. The cubic root of 97211047 is about 459.8030773366.

The spelling of 97211047 in words is "ninety-seven million, two hundred eleven thousand, forty-seven".