97181207 has 2 divisors, whose sum is σ = 97181208. Its totient is φ = 97181206.

The previous prime is 97181173. The next prime is 97181251. The reversal of 97181207 is 70218179.

It is a weak prime.

It is an emirp because it is prime and its reverse (70218179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97181207 - 2²² = 92986903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97181267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48590603 + 48590604.

It is an arithmetic number, because the mean of its divisors is an integer number (48590604).

Almost surely, 2^97181207 is an apocalyptic number.

97181207 is a deficient number, since it is larger than the sum of its proper divisors (1).

97181207 is an equidigital number, since it uses as much as digits as its factorization.

97181207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 97181207 is about 9858.0529010551. The cubic root of 97181207 is about 459.7560253180.

The spelling of 97181207 in words is "ninety-seven million, one hundred eighty-one thousand, two hundred seven".