45472447 has 4 divisors (see below), whose sum is σ = 46112976. Its totient is φ = 44831920.

The previous prime is 45472439. The next prime is 45472459. The reversal of 45472447 is 74427454.

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 45472447 - 2³ = 45472439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45472417) 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, 320158 + ... + 320299.

It is an arithmetic number, because the mean of its divisors is an integer number (11528244).

Almost surely, 2^45472447 is an apocalyptic number.

45472447 is a deficient number, since it is larger than the sum of its proper divisors (640529).

45472447 is an equidigital number, since it uses as much as digits as its factorization.

45472447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640528.

The product of its digits is 125440, while the sum is 37.

The square root of 45472447 is about 6743.3261080864. The cubic root of 45472447 is about 356.9297724796.

The spelling of 45472447 in words is "forty-five million, four hundred seventy-two thousand, four hundred forty-seven".