45128247 has 8 divisors (see below), whose sum is σ = 60395760. Its totient is φ = 29973120.

The previous prime is 45128233. The next prime is 45128257. The reversal of 45128247 is 74282154.

45128247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 45128247 - 2⁷ = 45128119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45128257) 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 7 ways as a sum of consecutive naturals, for example, 27154 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (7549470).

Almost surely, 2^45128247 is an apocalyptic number.

45128247 is a deficient number, since it is larger than the sum of its proper divisors (15267513).

45128247 is a wasteful number, since it uses less digits than its factorization.

45128247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56193.

The product of its digits is 17920, while the sum is 33.

The square root of 45128247 is about 6717.7560985793. The cubic root of 45128247 is about 356.0269069214.

The spelling of 45128247 in words is "forty-five million, one hundred twenty-eight thousand, two hundred forty-seven".