54278459 has 16 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 47478816.

The previous prime is 54278453. The next prime is 54278473. The reversal of 54278459 is 95487245.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 54278459 - 2⁴ = 54278443 is a prime.

It is a super-2 number, since 2×54278459² = 5892302222829362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54278453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10532 + ... + 14814.

It is an arithmetic number, because the mean of its divisors is an integer number (3855600).

Almost surely, 2^54278459 is an apocalyptic number.

54278459 is a deficient number, since it is larger than the sum of its proper divisors (7411141).

54278459 is a wasteful number, since it uses less digits than its factorization.

54278459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354.

The product of its digits is 403200, while the sum is 44.

The square root of 54278459 is about 7367.3916008313. The cubic root of 54278459 is about 378.6248983588.

The spelling of 54278459 in words is "fifty-four million, two hundred seventy-eight thousand, four hundred fifty-nine".