54532421 has 4 divisors (see below), whose sum is σ = 54548844. Its totient is φ = 54516000.

The previous prime is 54532409. The next prime is 54532427. The reversal of 54532421 is 12423545.

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 24611521 + 29920900 = 4961^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 54532421 - 2¹⁸ = 54270277 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 (54532427) 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, 1280 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (13637211).

Almost surely, 2^54532421 is an apocalyptic number.

It is an amenable number.

54532421 is a deficient number, since it is larger than the sum of its proper divisors (16423).

54532421 is a wasteful number, since it uses less digits than its factorization.

54532421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422.

The product of its digits is 4800, while the sum is 26.

The square root of 54532421 is about 7384.6070308446. The cubic root of 54532421 is about 379.2144923344.

Adding to 54532421 its reverse (12423545), we get a palindrome (66955966).

The spelling of 54532421 in words is "fifty-four million, five hundred thirty-two thousand, four hundred twenty-one".