91537753 has 2 divisors, whose sum is σ = 91537754. Its totient is φ = 91537752.

The previous prime is 91537739. The next prime is 91537793. The reversal of 91537753 is 35773519.

It is an a-pointer prime, because the next prime (91537793) can be obtained adding 91537753 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76265289 + 15272464 = 8733^2 + 3908^2 .

It is an emirp because it is prime and its reverse (35773519) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91537753 is a prime.

It is not a weakly prime, because it can be changed into another prime (91537793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45768876 + 45768877.

It is an arithmetic number, because the mean of its divisors is an integer number (45768877).

Almost surely, 2^91537753 is an apocalyptic number.

It is an amenable number.

91537753 is a deficient number, since it is larger than the sum of its proper divisors (1).

91537753 is an equidigital number, since it uses as much as digits as its factorization.

91537753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99225, while the sum is 40.

The square root of 91537753 is about 9567.5364122641. The cubic root of 91537753 is about 450.6784055502.

The spelling of 91537753 in words is "ninety-one million, five hundred thirty-seven thousand, seven hundred fifty-three".