54473809 has 4 divisors (see below), whose sum is σ = 58664116. Its totient is φ = 50283504.

The previous prime is 54473801. The next prime is 54473843. The reversal of 54473809 is 90837445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90837445 = 5 ⋅18167489.

It can be written as a sum of positive squares in 2 ways, for example, as 8573184 + 45900625 = 2928^2 + 6775^2 .

It is a cyclic number.

It is not a de Polignac number, because 54473809 - 2³ = 54473801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54473801) 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, 2095134 + ... + 2095159.

It is an arithmetic number, because the mean of its divisors is an integer number (14666029).

Almost surely, 2^54473809 is an apocalyptic number.

It is an amenable number.

54473809 is a deficient number, since it is larger than the sum of its proper divisors (4190307).

54473809 is a wasteful number, since it uses less digits than its factorization.

54473809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190306.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 54473809 is about 7380.6374385957. The cubic root of 54473809 is about 379.0785824342.

The spelling of 54473809 in words is "fifty-four million, four hundred seventy-three thousand, eight hundred nine".