2017551161 has 2 divisors, whose sum is σ = 2017551162. Its totient is φ = 2017551160.

The previous prime is 2017551121. The next prime is 2017551181. The reversal of 2017551161 is 1611557102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620545536 + 397005625 = 40256^2 + 19925^2 .

It is a cyclic number.

It is not a de Polignac number, because 2017551161 - 2⁶ = 2017551097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2017551121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008775580 + 1008775581.

It is an arithmetic number, because the mean of its divisors is an integer number (1008775581).

Almost surely, 2^2017551161 is an apocalyptic number.

It is an amenable number.

2017551161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2017551161 is an equidigital number, since it uses as much as digits as its factorization.

2017551161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 2017551161 is about 44917.1588705252. The cubic root of 2017551161 is about 1263.5958341768.

The spelling of 2017551161 in words is "two billion, seventeen million, five hundred fifty-one thousand, one hundred sixty-one".