100891541 has 2 divisors, whose sum is σ = 100891542. Its totient is φ = 100891540.

The previous prime is 100891523. The next prime is 100891589. The reversal of 100891541 is 145198001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62078641 + 38812900 = 7879^2 + 6230^2 .

It is a cyclic number.

It is not a de Polignac number, because 100891541 - 2¹⁴ = 100875157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100891591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50445770 + 50445771.

It is an arithmetic number, because the mean of its divisors is an integer number (50445771).

Almost surely, 2^100891541 is an apocalyptic number.

It is an amenable number.

100891541 is a deficient number, since it is larger than the sum of its proper divisors (1).

100891541 is an equidigital number, since it uses as much as digits as its factorization.

100891541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 100891541 is about 10044.4781347763. The cubic root of 100891541 is about 465.5341931893.

The spelling of 100891541 in words is "one hundred million, eight hundred ninety-one thousand, five hundred forty-one".