54727021 has 4 divisors (see below), whose sum is σ = 54753372. Its totient is φ = 54700672.

The previous prime is 54727009. The next prime is 54727027. The reversal of 54727021 is 12072745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12072745 = 5 ⋅2414549.

It can be written as a sum of positive squares in 2 ways, for example, as 50211396 + 4515625 = 7086^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 54727021 - 2¹¹ = 54724973 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 (54727027) 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, 9766 + ... + 14311.

It is an arithmetic number, because the mean of its divisors is an integer number (13688343).

Almost surely, 2^54727021 is an apocalyptic number.

It is an amenable number.

54727021 is a deficient number, since it is larger than the sum of its proper divisors (26351).

54727021 is a wasteful number, since it uses less digits than its factorization.

54727021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26350.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 54727021 is about 7397.7713535902. The cubic root of 54727021 is about 379.6650349209.

Adding to 54727021 its reverse (12072745), we get a palindrome (66799766).

The spelling of 54727021 in words is "fifty-four million, seven hundred twenty-seven thousand, twenty-one".