91954757 has 2 divisors, whose sum is σ = 91954758. Its totient is φ = 91954756.

The previous prime is 91954747. The next prime is 91954763. The reversal of 91954757 is 75745919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83740801 + 8213956 = 9151^2 + 2866^2 .

It is a cyclic number.

It is not a de Polignac number, because 91954757 - 2⁴ = 91954741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91954747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45977378 + 45977379.

It is an arithmetic number, because the mean of its divisors is an integer number (45977379).

Almost surely, 2^91954757 is an apocalyptic number.

It is an amenable number.

91954757 is a deficient number, since it is larger than the sum of its proper divisors (1).

91954757 is an equidigital number, since it uses as much as digits as its factorization.

91954757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 47.

The square root of 91954757 is about 9589.3043021900. The cubic root of 91954757 is about 451.3617303000.

The spelling of 91954757 in words is "ninety-one million, nine hundred fifty-four thousand, seven hundred fifty-seven".