91234541 has 2 divisors, whose sum is σ = 91234542. Its totient is φ = 91234540.

The previous prime is 91234531. The next prime is 91234547. The reversal of 91234541 is 14543219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 32041 = 9550^2 + 179^2 .

It is an emirp because it is prime and its reverse (14543219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91234541 - 2¹⁴ = 91218157 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 (91234547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45617270 + 45617271.

It is an arithmetic number, because the mean of its divisors is an integer number (45617271).

Almost surely, 2^91234541 is an apocalyptic number.

It is an amenable number.

91234541 is a deficient number, since it is larger than the sum of its proper divisors (1).

91234541 is an equidigital number, since it uses as much as digits as its factorization.

91234541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 91234541 is about 9551.6773919558. The cubic root of 91234541 is about 450.1802421998.

It can be divided in two parts, 912 and 34541, that added together give a palindrome (35453).

The spelling of 91234541 in words is "ninety-one million, two hundred thirty-four thousand, five hundred forty-one".