91054487 has 2 divisors, whose sum is σ = 91054488. Its totient is φ = 91054486.

The previous prime is 91054427. The next prime is 91054511. The reversal of 91054487 is 78445019.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91054487 - 2¹⁶ = 90988951 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91054487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91054427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45527243 + 45527244.

It is an arithmetic number, because the mean of its divisors is an integer number (45527244).

Almost surely, 2^91054487 is an apocalyptic number.

91054487 is a deficient number, since it is larger than the sum of its proper divisors (1).

91054487 is an equidigital number, since it uses as much as digits as its factorization.

91054487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 91054487 is about 9542.2474815947. The cubic root of 91054487 is about 449.8838992665.

The spelling of 91054487 in words is "ninety-one million, fifty-four thousand, four hundred eighty-seven".