97855207 has 2 divisors, whose sum is σ = 97855208. Its totient is φ = 97855206.

The previous prime is 97855169. The next prime is 97855211. The reversal of 97855207 is 70255879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97855207 - 2¹¹ = 97853159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97855237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48927603 + 48927604.

It is an arithmetic number, because the mean of its divisors is an integer number (48927604).

Almost surely, 2^97855207 is an apocalyptic number.

97855207 is a deficient number, since it is larger than the sum of its proper divisors (1).

97855207 is an equidigital number, since it uses as much as digits as its factorization.

97855207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 97855207 is about 9892.1790824873. The cubic root of 97855207 is about 460.8164564370.

The spelling of 97855207 in words is "ninety-seven million, eight hundred fifty-five thousand, two hundred seven".