45420047 has 4 divisors (see below), whose sum is σ = 45490896. Its totient is φ = 45349200.

The previous prime is 45420043. The next prime is 45420059. The reversal of 45420047 is 74002454.

45420047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45420047 - 2² = 45420043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45419998 and 45420025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420043) 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 3 ways as a sum of consecutive naturals, for example, 34454 + ... + 35747.

It is an arithmetic number, because the mean of its divisors is an integer number (11372724).

Almost surely, 2^45420047 is an apocalyptic number.

45420047 is a deficient number, since it is larger than the sum of its proper divisors (70849).

45420047 is an equidigital number, since it uses as much as digits as its factorization.

45420047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70848.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 45420047 is about 6739.4396651354. The cubic root of 45420047 is about 356.7926175644.

The spelling of 45420047 in words is "forty-five million, four hundred twenty thousand, forty-seven".