563571961 has 4 divisors (see below), whose sum is σ = 563764624. Its totient is φ = 563379300.

The previous prime is 563571929. The next prime is 563571979. The reversal of 563571961 is 169175365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 563571961 - 2⁵ = 563571929 is a prime.

It is a super-2 number, since 2×563571961² = 635226710450771042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (563571991) 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 3 ways as a sum of consecutive naturals, for example, 91875 + ... + 97816.

It is an arithmetic number, because the mean of its divisors is an integer number (140941156).

Almost surely, 2^563571961 is an apocalyptic number.

It is an amenable number.

563571961 is a deficient number, since it is larger than the sum of its proper divisors (192663).

563571961 is a wasteful number, since it uses less digits than its factorization.

563571961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192662.

The product of its digits is 170100, while the sum is 43.

The square root of 563571961 is about 23739.6706169231. The cubic root of 563571961 is about 826.0058553601.

The spelling of 563571961 in words is "five hundred sixty-three million, five hundred seventy-one thousand, nine hundred sixty-one".