192101257 has 2 divisors, whose sum is σ = 192101258. Its totient is φ = 192101256.

The previous prime is 192101251. The next prime is 192101281. The reversal of 192101257 is 752101291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172423161 + 19678096 = 13131^2 + 4436^2 .

It is an emirp because it is prime and its reverse (752101291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192101257 is a prime.

It is not a weakly prime, because it can be changed into another prime (192101251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96050628 + 96050629.

It is an arithmetic number, because the mean of its divisors is an integer number (96050629).

Almost surely, 2^192101257 is an apocalyptic number.

It is an amenable number.

192101257 is a deficient number, since it is larger than the sum of its proper divisors (1).

192101257 is an equidigital number, since it uses as much as digits as its factorization.

192101257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 192101257 is about 13860.0597762059. The cubic root of 192101257 is about 577.0012254839.

The spelling of 192101257 in words is "one hundred ninety-two million, one hundred one thousand, two hundred fifty-seven".