54718789 has 4 divisors (see below), whose sum is σ = 54737100. Its totient is φ = 54700480.

The previous prime is 54718787. The next prime is 54718793. The reversal of 54718789 is 98781745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98781745 = 5 ⋅19756349.

It can be written as a sum of positive squares in 2 ways, for example, as 35796289 + 18922500 = 5983^2 + 4350^2 .

It is a cyclic number.

It is not a de Polignac number, because 54718789 - 2¹ = 54718787 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 (54718787) 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, 3514 + ... + 11035.

It is an arithmetic number, because the mean of its divisors is an integer number (13684275).

Almost surely, 2^54718789 is an apocalyptic number.

It is an amenable number.

54718789 is a deficient number, since it is larger than the sum of its proper divisors (18311).

54718789 is a wasteful number, since it uses less digits than its factorization.

54718789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310.

The product of its digits is 564480, while the sum is 49.

The square root of 54718789 is about 7397.2149488845. The cubic root of 54718789 is about 379.6459976506.

The spelling of 54718789 in words is "fifty-four million, seven hundred eighteen thousand, seven hundred eighty-nine".