5145447 has 8 divisors (see below), whose sum is σ = 7221760. Its totient is φ = 3249720.

The previous prime is 5145433. The next prime is 5145463. The reversal of 5145447 is 7445415.

5145447 is digitally balanced in base 4, 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 5145447 - 2¹⁶ = 5079911 is a prime.

It is a Duffinian number.

5145447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145347) 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, 45079 + ... + 45192.

It is an arithmetic number, because the mean of its divisors is an integer number (902720).

Almost surely, 2^5145447 is an apocalyptic number.

5145447 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

5145447 is a deficient number, since it is larger than the sum of its proper divisors (2076313).

5145447 is a wasteful number, since it uses less digits than its factorization.

5145447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90293.

The product of its digits is 11200, while the sum is 30.

The square root of 5145447 is about 2268.3577760133. The cubic root of 5145447 is about 172.6398445903.

Subtracting 5145447 from its reverse (7445415), we obtain a cube (2299968 = 132³).

The spelling of 5145447 in words is "five million, one hundred forty-five thousand, four hundred forty-seven".