54320521 has 2 divisors, whose sum is σ = 54320522. Its totient is φ = 54320520.

The previous prime is 54320501. The next prime is 54320573. The reversal of 54320521 is 12502345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 14137600 = 6339^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 54320521 - 2⁹ = 54320009 is a prime.

It is a super-2 number, since 2×54320521² = 5901438003422882, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54320492 and 54320501.

It is not a weakly prime, because it can be changed into another prime (54320501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27160260 + 27160261.

It is an arithmetic number, because the mean of its divisors is an integer number (27160261).

Almost surely, 2^54320521 is an apocalyptic number.

It is an amenable number.

54320521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54320521 is an equidigital number, since it uses as much as digits as its factorization.

54320521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 54320521 is about 7370.2456539792. The cubic root of 54320521 is about 378.7226756893.

Adding to 54320521 its reverse (12502345), we get a palindrome (66822866).

The spelling of 54320521 in words is "fifty-four million, three hundred twenty thousand, five hundred twenty-one".