100297997 has 2 divisors, whose sum is σ = 100297998. Its totient is φ = 100297996.

The previous prime is 100297991. The next prime is 100297999. The reversal of 100297997 is 799792001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76930441 + 23367556 = 8771^2 + 4834^2 .

It is an emirp because it is prime and its reverse (799792001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100297997 - 2⁶ = 100297933 is a prime.

Together with 100297999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100297991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50148998 + 50148999.

It is an arithmetic number, because the mean of its divisors is an integer number (50148999).

Almost surely, 2^100297997 is an apocalyptic number.

It is an amenable number.

100297997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100297997 is an equidigital number, since it uses as much as digits as its factorization.

100297997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 100297997 is about 10014.8887662320. Note that the first 3 decimals coincide. The cubic root of 100297997 is about 464.6194859857.

The spelling of 100297997 in words is "one hundred million, two hundred ninety-seven thousand, nine hundred ninety-seven".