97100251 has 2 divisors, whose sum is σ = 97100252. Its totient is φ = 97100250.

The previous prime is 97100249. The next prime is 97100299. The reversal of 97100251 is 15200179.

It is a weak prime.

It is an emirp because it is prime and its reverse (15200179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97100251 - 2¹ = 97100249 is a prime.

Together with 97100249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (97100851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48550125 + 48550126.

It is an arithmetic number, because the mean of its divisors is an integer number (48550126).

Almost surely, 2^97100251 is an apocalyptic number.

97100251 is a deficient number, since it is larger than the sum of its proper divisors (1).

97100251 is an equidigital number, since it uses as much as digits as its factorization.

97100251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 97100251 is about 9853.9459608829. The cubic root of 97100251 is about 459.6283245345.

The spelling of 97100251 in words is "ninety-seven million, one hundred thousand, two hundred fifty-one".