220561443 has 48 divisors (see below), whose sum is σ = 351936000. Its totient is φ = 132560064.

The previous prime is 220561441. The next prime is 220561457. The reversal of 220561443 is 344165022.

220561443 is a `hidden beast` number, since 2 + 2 + 0 + 5 + 614 + 43 = 666.

It is not a de Polignac number, because 220561443 - 2¹ = 220561441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220561441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 391480 + ... + 392042.

It is an arithmetic number, because the mean of its divisors is an integer number (7332000).

Almost surely, 2^220561443 is an apocalyptic number.

220561443 is a deficient number, since it is larger than the sum of its proper divisors (131374557).

220561443 is a wasteful number, since it uses less digits than its factorization.

220561443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 220561443 is about 14851.3111542382. The cubic root of 220561443 is about 604.1941715601.

The spelling of 220561443 in words is "two hundred twenty million, five hundred sixty-one thousand, four hundred forty-three".