22491003 has 8 divisors (see below), whose sum is σ = 31566400. Its totient is φ = 14204808.

The previous prime is 22490989. The next prime is 22491013. The reversal of 22491003 is 30019422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22491003 - 2⁶ = 22490939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22491013) 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 in 7 ways as a sum of consecutive naturals, for example, 197233 + ... + 197346.

It is an arithmetic number, because the mean of its divisors is an integer number (3945800).

Almost surely, 2^22491003 is an apocalyptic number.

22491003 is a deficient number, since it is larger than the sum of its proper divisors (9075397).

22491003 is a wasteful number, since it uses less digits than its factorization.

22491003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394601.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22491003 is about 4742.4680283582. The cubic root of 22491003 is about 282.2731747537.

The spelling of 22491003 in words is "twenty-two million, four hundred ninety-one thousand, three".