54343209 has 4 divisors (see below), whose sum is σ = 72457616. Its totient is φ = 36228804.

The previous prime is 54343199. The next prime is 54343213. The reversal of 54343209 is 90234345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54343209 - 2⁴ = 54343193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54343229) 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, 9057199 + ... + 9057204.

It is an arithmetic number, because the mean of its divisors is an integer number (18114404).

Almost surely, 2^54343209 is an apocalyptic number.

It is an amenable number.

54343209 is a deficient number, since it is larger than the sum of its proper divisors (18114407).

54343209 is a wasteful number, since it uses less digits than its factorization.

54343209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114406.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 54343209 is about 7371.7846550208. The cubic root of 54343209 is about 378.7753952626.

The spelling of 54343209 in words is "fifty-four million, three hundred forty-three thousand, two hundred nine".