82541891 has 2 divisors, whose sum is σ = 82541892. Its totient is φ = 82541890.

The previous prime is 82541887. The next prime is 82541929. The reversal of 82541891 is 19814528.

It is an a-pointer prime, because the next prime (82541929) can be obtained adding 82541891 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82541891 - 2² = 82541887 is a prime.

It is not a weakly prime, because it can be changed into another prime (82541821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41270945 + 41270946.

It is an arithmetic number, because the mean of its divisors is an integer number (41270946).

Almost surely, 2^82541891 is an apocalyptic number.

82541891 is a deficient number, since it is larger than the sum of its proper divisors (1).

82541891 is an equidigital number, since it uses as much as digits as its factorization.

82541891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 82541891 is about 9085.2567932888. The cubic root of 82541891 is about 435.4030544475.

The spelling of 82541891 in words is "eighty-two million, five hundred forty-one thousand, eight hundred ninety-one".