45198993 has 16 divisors (see below), whose sum is σ = 69587840. Its totient is φ = 25560576.

The previous prime is 45198991. The next prime is 45199003. The reversal of 45198993 is 39989154.

45198993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45198993 - 2¹ = 45198991 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45198991) 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 in 15 ways as a sum of consecutive naturals, for example, 9058 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (4349240).

Almost surely, 2^45198993 is an apocalyptic number.

It is an amenable number.

45198993 is a deficient number, since it is larger than the sum of its proper divisors (24388847).

45198993 is a wasteful number, since it uses less digits than its factorization.

45198993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22296.

The product of its digits is 349920, while the sum is 48.

The square root of 45198993 is about 6723.0196340633. The cubic root of 45198993 is about 356.2128534983.

The spelling of 45198993 in words is "forty-five million, one hundred ninety-eight thousand, nine hundred ninety-three".