54425821 has 4 divisors (see below), whose sum is σ = 54445500. Its totient is φ = 54406144.

The previous prime is 54425759. The next prime is 54425849. The reversal of 54425821 is 12852445.

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 14546596 + 39879225 = 3814^2 + 6315^2 .

It is a cyclic number.

It is not a de Polignac number, because 54425821 - 2⁹ = 54425309 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 (54425321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4846 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (13611375).

Almost surely, 2^54425821 is an apocalyptic number.

It is an amenable number.

54425821 is a deficient number, since it is larger than the sum of its proper divisors (19679).

54425821 is a wasteful number, since it uses less digits than its factorization.

54425821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19678.

The product of its digits is 12800, while the sum is 31.

The square root of 54425821 is about 7377.3857835957. The cubic root of 54425821 is about 378.9672349339.

The spelling of 54425821 in words is "fifty-four million, four hundred twenty-five thousand, eight hundred twenty-one".