101911157 has 2 divisors, whose sum is σ = 101911158. Its totient is φ = 101911156.

The previous prime is 101911153. The next prime is 101911177. The reversal of 101911157 is 751119101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99480676 + 2430481 = 9974^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 101911157 - 2² = 101911153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101911151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50955578 + 50955579.

It is an arithmetic number, because the mean of its divisors is an integer number (50955579).

Almost surely, 2^101911157 is an apocalyptic number.

It is an amenable number.

101911157 is a deficient number, since it is larger than the sum of its proper divisors (1).

101911157 is an equidigital number, since it uses as much as digits as its factorization.

101911157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 26.

The square root of 101911157 is about 10095.1055962778. The cubic root of 101911157 is about 467.0971786266.

The spelling of 101911157 in words is "one hundred one million, nine hundred eleven thousand, one hundred fifty-seven".