45321147 has 16 divisors (see below), whose sum is σ = 67307680. Its totient is φ = 30139776.

The previous prime is 45321139. The next prime is 45321149. The reversal of 45321147 is 74112354.

It is not a de Polignac number, because 45321147 - 2³ = 45321139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45321147.

It is not an unprimeable number, because it can be changed into a prime (45321149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10503 + ... + 14175.

It is an arithmetic number, because the mean of its divisors is an integer number (4206730).

Almost surely, 2^45321147 is an apocalyptic number.

45321147 is a deficient number, since it is larger than the sum of its proper divisors (21986533).

45321147 is a wasteful number, since it uses less digits than its factorization.

45321147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139 (or 4133 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 45321147 is about 6732.0982613150. The cubic root of 45321147 is about 356.5334630354.

The spelling of 45321147 in words is "forty-five million, three hundred twenty-one thousand, one hundred forty-seven".