161071051 has 2 divisors, whose sum is σ = 161071052. Its totient is φ = 161071050.

The previous prime is 161071019. The next prime is 161071061. The reversal of 161071051 is 150170161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161071051 - 2⁵ = 161071019 is a prime.

It is not a weakly prime, because it can be changed into another prime (161071061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80535525 + 80535526.

It is an arithmetic number, because the mean of its divisors is an integer number (80535526).

Almost surely, 2^161071051 is an apocalyptic number.

161071051 is a deficient number, since it is larger than the sum of its proper divisors (1).

161071051 is an equidigital number, since it uses as much as digits as its factorization.

161071051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 161071051 is about 12691.3770332458. The cubic root of 161071051 is about 544.0921968790.

The spelling of 161071051 in words is "one hundred sixty-one million, seventy-one thousand, fifty-one".