54025921 has 4 divisors (see below), whose sum is σ = 55045332. Its totient is φ = 53006512.

The previous prime is 54025891. The next prime is 54025999. The reversal of 54025921 is 12952045.

54025921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 25553025 + 28472896 = 5055^2 + 5336^2 .

It is a cyclic number.

It is not a de Polignac number, because 54025921 - 2⁷ = 54025793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54025921.

It is not an unprimeable number, because it can be changed into a prime (54025021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509626 + ... + 509731.

It is an arithmetic number, because the mean of its divisors is an integer number (13761333).

Almost surely, 2^54025921 is an apocalyptic number.

It is an amenable number.

54025921 is a deficient number, since it is larger than the sum of its proper divisors (1019411).

54025921 is a wasteful number, since it uses less digits than its factorization.

54025921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019410.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 54025921 is about 7350.2327174043. The cubic root of 54025921 is about 378.0367838377.

Adding to 54025921 its reverse (12952045), we get a palindrome (66977966).

It can be divided in two parts, 540259 and 21, that added together give a triangular number (540280 = T₁₀₃₉).

The spelling of 54025921 in words is "fifty-four million, twenty-five thousand, nine hundred twenty-one".