91372003 has 2 divisors, whose sum is σ = 91372004. Its totient is φ = 91372002.

The previous prime is 91371979. The next prime is 91372009. The reversal of 91372003 is 30027319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91372003 - 2⁹ = 91371491 is a prime.

It is not a weakly prime, because it can be changed into another prime (91372009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45686001 + 45686002.

It is an arithmetic number, because the mean of its divisors is an integer number (45686002).

Almost surely, 2^91372003 is an apocalyptic number.

91372003 is a deficient number, since it is larger than the sum of its proper divisors (1).

91372003 is an equidigital number, since it uses as much as digits as its factorization.

91372003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 91372003 is about 9558.8703830526. The cubic root of 91372003 is about 450.4062224863.

The spelling of 91372003 in words is "ninety-one million, three hundred seventy-two thousand, three".