101297947 has 2 divisors, whose sum is σ = 101297948. Its totient is φ = 101297946.

The previous prime is 101297929. The next prime is 101297993. The reversal of 101297947 is 749792101.

It is a weak prime.

It is an emirp because it is prime and its reverse (749792101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101297947 is a prime.

It is a super-2 number, since 2×101297947² = 20522548132829618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101297927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50648973 + 50648974.

It is an arithmetic number, because the mean of its divisors is an integer number (50648974).

Almost surely, 2^101297947 is an apocalyptic number.

101297947 is a deficient number, since it is larger than the sum of its proper divisors (1).

101297947 is an equidigital number, since it uses as much as digits as its factorization.

101297947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 101297947 is about 10064.6881223414. The cubic root of 101297947 is about 466.1584358764.

The spelling of 101297947 in words is "one hundred one million, two hundred ninety-seven thousand, nine hundred forty-seven".