56221546 has 16 divisors (see below), whose sum is σ = 88050600. Its totient is φ = 26889408.

The previous prime is 56221531. The next prime is 56221547. The reversal of 56221546 is 64512265.

It can be written as a sum of positive squares in 4 ways, for example, as 44076321 + 12145225 = 6639^2 + 3485^2 .

It is not an unprimeable number, because it can be changed into a prime (56221547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876 + ... + 10768.

Almost surely, 2^56221546 is an apocalyptic number.

56221546 is a deficient number, since it is larger than the sum of its proper divisors (31829054).

56221546 is a wasteful number, since it uses less digits than its factorization.

56221546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9033.

The product of its digits is 14400, while the sum is 31.

The square root of 56221546 is about 7498.1028267156. The cubic root of 56221546 is about 383.0900991709.

The spelling of 56221546 in words is "fifty-six million, two hundred twenty-one thousand, five hundred forty-six".