54224521 has 4 divisors (see below), whose sum is σ = 58395652. Its totient is φ = 50053392.

The previous prime is 54224491. The next prime is 54224531. The reversal of 54224521 is 12542245.

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 28772496 + 25452025 = 5364^2 + 5045^2 .

It is a cyclic number.

It is not a de Polignac number, because 54224521 - 2⁷ = 54224393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54224531) 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, 2085546 + ... + 2085571.

It is an arithmetic number, because the mean of its divisors is an integer number (14598913).

Almost surely, 2^54224521 is an apocalyptic number.

It is an amenable number.

54224521 is a deficient number, since it is larger than the sum of its proper divisors (4171131).

54224521 is a wasteful number, since it uses less digits than its factorization.

54224521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171130.

The product of its digits is 3200, while the sum is 25.

The square root of 54224521 is about 7363.7301009746. The cubic root of 54224521 is about 378.4994401285.

Adding to 54224521 its reverse (12542245), we get a palindrome (66766766).

It can be divided in two parts, 54224 and 521, that added together give a palindrome (54745).

The spelling of 54224521 in words is "fifty-four million, two hundred twenty-four thousand, five hundred twenty-one".