54539409 has 8 divisors (see below), whose sum is σ = 72754272. Its totient is φ = 36342080.

The previous prime is 54539399. The next prime is 54539413. The reversal of 54539409 is 90493545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54539409 - 2⁸ = 54539153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54539449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7417 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (9094284).

Almost surely, 2^54539409 is an apocalyptic number.

It is an amenable number.

54539409 is a deficient number, since it is larger than the sum of its proper divisors (18214863).

54539409 is a wasteful number, since it uses less digits than its factorization.

54539409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8767.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 54539409 is about 7385.0801620565. The cubic root of 54539409 is about 379.2306896573.

The spelling of 54539409 in words is "fifty-four million, five hundred thirty-nine thousand, four hundred nine".