160561553 has 2 divisors, whose sum is σ = 160561554. Its totient is φ = 160561552.

The previous prime is 160561519. The next prime is 160561559. The reversal of 160561553 is 355165061.

160561553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 27112849 = 11552^2 + 5207^2 .

It is a cyclic number.

It is not a de Polignac number, because 160561553 - 2²⁴ = 143784337 is a prime.

It is not a weakly prime, because it can be changed into another prime (160561559) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80280776 + 80280777.

It is an arithmetic number, because the mean of its divisors is an integer number (80280777).

Almost surely, 2^160561553 is an apocalyptic number.

It is an amenable number.

160561553 is a deficient number, since it is larger than the sum of its proper divisors (1).

160561553 is an equidigital number, since it uses as much as digits as its factorization.

160561553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 160561553 is about 12671.2885295853. The cubic root of 160561553 is about 543.5179023005.

The spelling of 160561553 in words is "one hundred sixty million, five hundred sixty-one thousand, five hundred fifty-three".