54255409 has 4 divisors (see below), whose sum is σ = 58428916. Its totient is φ = 50081904.

The previous prime is 54255403. The next prime is 54255419. The reversal of 54255409 is 90455245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90455245 = 5 ⋅18091049.

It can be written as a sum of positive squares in 2 ways, for example, as 13653025 + 40602384 = 3695^2 + 6372^2 .

It is a cyclic number.

It is not a de Polignac number, because 54255409 - 2²³ = 45866801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54255403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086734 + ... + 2086759.

It is an arithmetic number, because the mean of its divisors is an integer number (14607229).

Almost surely, 2^54255409 is an apocalyptic number.

It is an amenable number.

54255409 is a deficient number, since it is larger than the sum of its proper divisors (4173507).

54255409 is a wasteful number, since it uses less digits than its factorization.

54255409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173506.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 54255409 is about 7365.8271090218. The cubic root of 54255409 is about 378.5712948990.

The spelling of 54255409 in words is "fifty-four million, two hundred fifty-five thousand, four hundred nine".