91927541 has 2 divisors, whose sum is σ = 91927542. Its totient is φ = 91927540.

The previous prime is 91927531. The next prime is 91927543. The reversal of 91927541 is 14572919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58461316 + 33466225 = 7646^2 + 5785^2 .

It is an emirp because it is prime and its reverse (14572919) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91927541 is a prime.

Together with 91927543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91927495 and 91927504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91927543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45963770 + 45963771.

It is an arithmetic number, because the mean of its divisors is an integer number (45963771).

Almost surely, 2^91927541 is an apocalyptic number.

It is an amenable number.

91927541 is a deficient number, since it is larger than the sum of its proper divisors (1).

91927541 is an equidigital number, since it uses as much as digits as its factorization.

91927541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 38.

The square root of 91927541 is about 9587.8851161244. The cubic root of 91927541 is about 451.3171958159.

The spelling of 91927541 in words is "ninety-one million, nine hundred twenty-seven thousand, five hundred forty-one".