160043561 has 4 divisors (see below), whose sum is σ = 160848000. Its totient is φ = 159239124.

The previous prime is 160043557. The next prime is 160043567. The reversal of 160043561 is 165340061.

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 160043561 - 2² = 160043557 is a prime.

It is a super-2 number, since 2×160043561² = 51227882835121442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 160043561.

It is not an unprimeable number, because it can be changed into a prime (160043567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401921 + ... + 402318.

It is an arithmetic number, because the mean of its divisors is an integer number (40212000).

Almost surely, 2^160043561 is an apocalyptic number.

It is an amenable number.

160043561 is a deficient number, since it is larger than the sum of its proper divisors (804439).

160043561 is an equidigital number, since it uses as much as digits as its factorization.

160043561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804438.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 160043561 is about 12650.8324232044. The cubic root of 160043561 is about 542.9327866592.

The spelling of 160043561 in words is "one hundred sixty million, forty-three thousand, five hundred sixty-one".