45000047 has 4 divisors (see below), whose sum is σ = 45616560. Its totient is φ = 44383536.

The previous prime is 45000031. The next prime is 45000061. The reversal of 45000047 is 74000054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45000047 - 2⁴ = 45000031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44999992 and 45000028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45000017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308147 + ... + 308292.

It is an arithmetic number, because the mean of its divisors is an integer number (11404140).

Almost surely, 2^45000047 is an apocalyptic number.

45000047 is a deficient number, since it is larger than the sum of its proper divisors (616513).

45000047 is an equidigital number, since it uses as much as digits as its factorization.

45000047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616512.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 45000047 is about 6708.2074356716. The cubic root of 45000047 is about 355.6894542815.

The spelling of 45000047 in words is "forty-five million, forty-seven", and thus it is an aban number and an uban number.