161080757 has 2 divisors, whose sum is σ = 161080758. Its totient is φ = 161080756.

The previous prime is 161080747. The next prime is 161080781. The reversal of 161080757 is 757080161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96020401 + 65060356 = 9799^2 + 8066^2 .

It is a cyclic number.

It is not a de Polignac number, because 161080757 - 2¹⁴ = 161064373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161080747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80540378 + 80540379.

It is an arithmetic number, because the mean of its divisors is an integer number (80540379).

Almost surely, 2^161080757 is an apocalyptic number.

It is an amenable number.

161080757 is a deficient number, since it is larger than the sum of its proper divisors (1).

161080757 is an equidigital number, since it uses as much as digits as its factorization.

161080757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 161080757 is about 12691.7594130995. The cubic root of 161080757 is about 544.1031254988.

The spelling of 161080757 in words is "one hundred sixty-one million, eighty thousand, seven hundred fifty-seven".