101970857 has 2 divisors, whose sum is σ = 101970858. Its totient is φ = 101970856.

The previous prime is 101970809. The next prime is 101970859. The reversal of 101970857 is 758079101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94264681 + 7706176 = 9709^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 101970857 - 2⁸ = 101970601 is a prime.

Together with 101970859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101970857.

It is not a weakly prime, because it can be changed into another prime (101970859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50985428 + 50985429.

It is an arithmetic number, because the mean of its divisors is an integer number (50985429).

Almost surely, 2^101970857 is an apocalyptic number.

It is an amenable number.

101970857 is a deficient number, since it is larger than the sum of its proper divisors (1).

101970857 is an equidigital number, since it uses as much as digits as its factorization.

101970857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 101970857 is about 10098.0620417979. The cubic root of 101970857 is about 467.1883700099.

The spelling of 101970857 in words is "one hundred one million, nine hundred seventy thousand, eight hundred fifty-seven".