54309287 has 4 divisors (see below), whose sum is σ = 54324336. Its totient is φ = 54294240.

The previous prime is 54309263. The next prime is 54309293. The reversal of 54309287 is 78290345.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54309287 - 2⁶ = 54309223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54309287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54309247) 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, 1487 + ... + 10527.

It is an arithmetic number, because the mean of its divisors is an integer number (13581084).

Almost surely, 2^54309287 is an apocalyptic number.

54309287 is a deficient number, since it is larger than the sum of its proper divisors (15049).

54309287 is an equidigital number, since it uses as much as digits as its factorization.

54309287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 54309287 is about 7369.4834961482. The cubic root of 54309287 is about 378.6965660731.

The spelling of 54309287 in words is "fifty-four million, three hundred nine thousand, two hundred eighty-seven".