91324603 has 2 divisors, whose sum is σ = 91324604. Its totient is φ = 91324602.

The previous prime is 91324579. The next prime is 91324631. The reversal of 91324603 is 30642319.

It is an a-pointer prime, because the next prime (91324631) can be obtained adding 91324603 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91324603 - 2¹³ = 91316411 is a prime.

It is a super-2 number, since 2×91324603² = 16680366226215218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91324643) 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, 45662301 + 45662302.

It is an arithmetic number, because the mean of its divisors is an integer number (45662302).

Almost surely, 2^91324603 is an apocalyptic number.

91324603 is a deficient number, since it is larger than the sum of its proper divisors (1).

91324603 is an equidigital number, since it uses as much as digits as its factorization.

91324603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 91324603 is about 9556.3906889578. The cubic root of 91324603 is about 450.3283250012.

The spelling of 91324603 in words is "ninety-one million, three hundred twenty-four thousand, six hundred three".