91477543 has 2 divisors, whose sum is σ = 91477544. Its totient is φ = 91477542.

The previous prime is 91477511. The next prime is 91477549. The reversal of 91477543 is 34577419.

It is a strong prime.

It is an emirp because it is prime and its reverse (34577419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91477543 - 2⁵ = 91477511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91477496 and 91477505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91477549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45738771 + 45738772.

It is an arithmetic number, because the mean of its divisors is an integer number (45738772).

Almost surely, 2^91477543 is an apocalyptic number.

91477543 is a deficient number, since it is larger than the sum of its proper divisors (1).

91477543 is an equidigital number, since it uses as much as digits as its factorization.

91477543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 91477543 is about 9564.3893166265. The cubic root of 91477543 is about 450.5795709251.

The spelling of 91477543 in words is "ninety-one million, four hundred seventy-seven thousand, five hundred forty-three".