54199309 has 8 divisors (see below), whose sum is σ = 54968760. Its totient is φ = 53433600.

The previous prime is 54199291. The next prime is 54199333. The reversal of 54199309 is 90399145.

It can be written as a sum of positive squares in 4 ways, for example, as 7823209 + 46376100 = 2797^2 + 6810^2 .

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 54199309 - 2⁹ = 54198797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54193309) 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 7 ways as a sum of consecutive naturals, for example, 40369 + ... + 41689.

It is an arithmetic number, because the mean of its divisors is an integer number (6871095).

Almost surely, 2^54199309 is an apocalyptic number.

It is an amenable number.

54199309 is a deficient number, since it is larger than the sum of its proper divisors (769451).

54199309 is a wasteful number, since it uses less digits than its factorization.

54199309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 54199309 is about 7362.0179978047. The cubic root of 54199309 is about 378.4407692107.

The spelling of 54199309 in words is "fifty-four million, one hundred ninety-nine thousand, three hundred nine".