56754221 has 2 divisors, whose sum is σ = 56754222. Its totient is φ = 56754220.

The previous prime is 56754167. The next prime is 56754259. The reversal of 56754221 is 12245765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56040196 + 714025 = 7486^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 56754221 - 2⁶ = 56754157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56754821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28377110 + 28377111.

It is an arithmetic number, because the mean of its divisors is an integer number (28377111).

Almost surely, 2^56754221 is an apocalyptic number.

It is an amenable number.

56754221 is a deficient number, since it is larger than the sum of its proper divisors (1).

56754221 is an equidigital number, since it uses as much as digits as its factorization.

56754221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 56754221 is about 7533.5397390603. The cubic root of 56754221 is about 384.2961695347.

Adding to 56754221 its reverse (12245765), we get a palindrome (68999986).

The spelling of 56754221 in words is "fifty-six million, seven hundred fifty-four thousand, two hundred twenty-one".