54548729 has 4 divisors (see below), whose sum is σ = 54584484. Its totient is φ = 54512976.

The previous prime is 54548719. The next prime is 54548731. The reversal of 54548729 is 92784545.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26214400 + 28334329 = 5120^2 + 5323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54548729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54548729.

It is not an unprimeable number, because it can be changed into a prime (54548719) 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, 15482 + ... + 18675.

It is an arithmetic number, because the mean of its divisors is an integer number (13646121).

Almost surely, 2^54548729 is an apocalyptic number.

It is an amenable number.

54548729 is a deficient number, since it is larger than the sum of its proper divisors (35755).

54548729 is a wasteful number, since it uses less digits than its factorization.

54548729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35754.

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

The square root of 54548729 is about 7385.7111370538. The cubic root of 54548729 is about 379.2522901157.

The spelling of 54548729 in words is "fifty-four million, five hundred forty-eight thousand, seven hundred twenty-nine".