97224191 has 2 divisors, whose sum is σ = 97224192. Its totient is φ = 97224190.

The previous prime is 97224133. The next prime is 97224199. The reversal of 97224191 is 19142279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97224191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97224199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48612095 + 48612096.

It is an arithmetic number, because the mean of its divisors is an integer number (48612096).

Almost surely, 2^97224191 is an apocalyptic number.

97224191 is a deficient number, since it is larger than the sum of its proper divisors (1).

97224191 is an equidigital number, since it uses as much as digits as its factorization.

97224191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 97224191 is about 9860.2328065822. The cubic root of 97224191 is about 459.8237998761.

The spelling of 97224191 in words is "ninety-seven million, two hundred twenty-four thousand, one hundred ninety-one".