54831409 has 4 divisors (see below), whose sum is σ = 58056804. Its totient is φ = 51606016.

The previous prime is 54831367. The next prime is 54831421. The reversal of 54831409 is 90413845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90413845 = 5 ⋅18082769.

It can be written as a sum of positive squares in 2 ways, for example, as 19607184 + 35224225 = 4428^2 + 5935^2 .

It is not a de Polignac number, because 54831409 - 2¹¹ = 54829361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54831449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612672 + ... + 1612705.

It is an arithmetic number, because the mean of its divisors is an integer number (14514201).

Almost surely, 2^54831409 is an apocalyptic number.

It is an amenable number.

54831409 is a deficient number, since it is larger than the sum of its proper divisors (3225395).

54831409 is a wasteful number, since it uses less digits than its factorization.

54831409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225394.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 54831409 is about 7404.8233604861. The cubic root of 54831409 is about 379.9062765165.

The spelling of 54831409 in words is "fifty-four million, eight hundred thirty-one thousand, four hundred nine".