91254767 has 2 divisors, whose sum is σ = 91254768. Its totient is φ = 91254766.

The previous prime is 91254749. The next prime is 91254773. The reversal of 91254767 is 76745219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91254767 - 2⁶ = 91254703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91254797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45627383 + 45627384.

It is an arithmetic number, because the mean of its divisors is an integer number (45627384).

Almost surely, 2^91254767 is an apocalyptic number.

91254767 is a deficient number, since it is larger than the sum of its proper divisors (1).

91254767 is an equidigital number, since it uses as much as digits as its factorization.

91254767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 91254767 is about 9552.7361001966. The cubic root of 91254767 is about 450.2135069140.

The spelling of 91254767 in words is "ninety-one million, two hundred fifty-four thousand, seven hundred sixty-seven".