54547481 has 4 divisors (see below), whose sum is σ = 55441764. Its totient is φ = 53653200.

The previous prime is 54547469. The next prime is 54547487. The reversal of 54547481 is 18474545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 52345225 = 1484^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 54547481 - 2⁶ = 54547417 is a prime.

It is a super-2 number, since 2×54547481² = 5950855366890722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54547487) 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, 447050 + ... + 447171.

It is an arithmetic number, because the mean of its divisors is an integer number (13860441).

Almost surely, 2^54547481 is an apocalyptic number.

It is an amenable number.

54547481 is a deficient number, since it is larger than the sum of its proper divisors (894283).

54547481 is an equidigital number, since it uses as much as digits as its factorization.

54547481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894282.

The product of its digits is 89600, while the sum is 38.

The square root of 54547481 is about 7385.6266491070. The cubic root of 54547481 is about 379.2493978365.

The spelling of 54547481 in words is "fifty-four million, five hundred forty-seven thousand, four hundred eighty-one".