45198945 has 48 divisors (see below), whose sum is σ = 88354560. Its totient is φ = 21906720.

The previous prime is 45198931. The next prime is 45198949. The reversal of 45198945 is 54989154.

45198945 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 45198945 - 2¹³ = 45190753 is a prime.

It is a super-2 number, since 2×45198945² = 4085889258226050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 45198945.

It is not an unprimeable number, because it can be changed into a prime (45198949) 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 47 ways as a sum of consecutive naturals, for example, 14952 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (1840720).

Almost surely, 2^45198945 is an apocalyptic number.

45198945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45198945 is a deficient number, since it is larger than the sum of its proper divisors (43155615).

45198945 is a wasteful number, since it uses less digits than its factorization.

45198945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803 (or 2786 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 45198945 is about 6723.0160642378. The cubic root of 45198945 is about 356.2127274024.

The spelling of 45198945 in words is "forty-five million, one hundred ninety-eight thousand, nine hundred forty-five".