54815439 has 8 divisors (see below), whose sum is σ = 83528320. Its totient is φ = 31323096.

The previous prime is 54815357. The next prime is 54815443. The reversal of 54815439 is 93451845.

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

It is not a de Polignac number, because 54815439 - 2¹² = 54811343 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 54815397 and 54815406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54815459) 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, 1305109 + ... + 1305150.

It is an arithmetic number, because the mean of its divisors is an integer number (10441040).

Almost surely, 2^54815439 is an apocalyptic number.

54815439 is a deficient number, since it is larger than the sum of its proper divisors (28712881).

54815439 is a wasteful number, since it uses less digits than its factorization.

54815439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610269.

The product of its digits is 86400, while the sum is 39.

The square root of 54815439 is about 7403.7449307766. The cubic root of 54815439 is about 379.8693895542.

The spelling of 54815439 in words is "fifty-four million, eight hundred fifteen thousand, four hundred thirty-nine".