91519453 has 2 divisors, whose sum is σ = 91519454. Its totient is φ = 91519452.

The previous prime is 91519411. The next prime is 91519457. The reversal of 91519453 is 35491519.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 21930489 = 8342^2 + 4683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91519453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91519457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45759726 + 45759727.

It is an arithmetic number, because the mean of its divisors is an integer number (45759727).

Almost surely, 2^91519453 is an apocalyptic number.

It is an amenable number.

91519453 is a deficient number, since it is larger than the sum of its proper divisors (1).

91519453 is an equidigital number, since it uses as much as digits as its factorization.

91519453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 37.

The square root of 91519453 is about 9566.5800054147. The cubic root of 91519453 is about 450.6483707132.

The spelling of 91519453 in words is "ninety-one million, five hundred nineteen thousand, four hundred fifty-three".