56477321 has 2 divisors, whose sum is σ = 56477322. Its totient is φ = 56477320.

The previous prime is 56477303. The next prime is 56477341. The reversal of 56477321 is 12377465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45751696 + 10725625 = 6764^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 56477321 - 2¹⁰ = 56476297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56477341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28238660 + 28238661.

It is an arithmetic number, because the mean of its divisors is an integer number (28238661).

Almost surely, 2^56477321 is an apocalyptic number.

It is an amenable number.

56477321 is a deficient number, since it is larger than the sum of its proper divisors (1).

56477321 is an equidigital number, since it uses as much as digits as its factorization.

56477321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 35.

The square root of 56477321 is about 7515.1394531306. The cubic root of 56477321 is about 383.6701653573.

The spelling of 56477321 in words is "fifty-six million, four hundred seventy-seven thousand, three hundred twenty-one".