45042447 has 8 divisors (see below), whose sum is σ = 60228144. Its totient is φ = 29942528.

The previous prime is 45042443. The next prime is 45042451. The reversal of 45042447 is 74424054.

It is an interprime number because it is at equal distance from previous prime (45042443) and next prime (45042451).

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

It is a cyclic number.

It is not a de Polignac number, because 45042447 - 2² = 45042443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45042443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20208 + ... + 22325.

It is an arithmetic number, because the mean of its divisors is an integer number (7528518).

Almost surely, 2^45042447 is an apocalyptic number.

45042447 is a deficient number, since it is larger than the sum of its proper divisors (15185697).

45042447 is a wasteful number, since it uses less digits than its factorization.

45042447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42889.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 45042447 is about 6711.3669993527. The cubic root of 45042447 is about 355.8011319332.

The spelling of 45042447 in words is "forty-five million, forty-two thousand, four hundred forty-seven".