100641857 has 2 divisors, whose sum is σ = 100641858. Its totient is φ = 100641856.

The previous prime is 100641851. The next prime is 100641881. The reversal of 100641857 is 758146001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61716736 + 38925121 = 7856^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 100641857 - 2⁸ = 100641601 is a prime.

It is not a weakly prime, because it can be changed into another prime (100641851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50320928 + 50320929.

It is an arithmetic number, because the mean of its divisors is an integer number (50320929).

Almost surely, 2^100641857 is an apocalyptic number.

It is an amenable number.

100641857 is a deficient number, since it is larger than the sum of its proper divisors (1).

100641857 is an equidigital number, since it uses as much as digits as its factorization.

100641857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 100641857 is about 10032.0415170592. The cubic root of 100641857 is about 465.1498449516.

Adding to 100641857 its reverse (758146001), we get a palindrome (858787858).

The spelling of 100641857 in words is "one hundred million, six hundred forty-one thousand, eight hundred fifty-seven".