547240447 has 4 divisors (see below), whose sum is σ = 589335880. Its totient is φ = 505145016.

The previous prime is 547240409. The next prime is 547240453. The reversal of 547240447 is 744042745.

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 547240447 - 2²⁷ = 413022719 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 (547240457) 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, 21047697 + ... + 21047722.

It is an arithmetic number, because the mean of its divisors is an integer number (147333970).

Almost surely, 2^547240447 is an apocalyptic number.

547240447 is a deficient number, since it is larger than the sum of its proper divisors (42095433).

547240447 is a wasteful number, since it uses less digits than its factorization.

547240447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42095432.

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

The square root of 547240447 is about 23393.1709479497. The cubic root of 547240447 is about 817.9486933863.

The spelling of 547240447 in words is "five hundred forty-seven million, two hundred forty thousand, four hundred forty-seven".