161151097 has 2 divisors, whose sum is σ = 161151098. Its totient is φ = 161151096.

The previous prime is 161151083. The next prime is 161151119. The reversal of 161151097 is 790151161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139145616 + 22005481 = 11796^2 + 4691^2 .

It is a cyclic number.

It is not a de Polignac number, because 161151097 - 2¹⁵ = 161118329 is a prime.

It is not a weakly prime, because it can be changed into another prime (161151017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80575548 + 80575549.

It is an arithmetic number, because the mean of its divisors is an integer number (80575549).

Almost surely, 2^161151097 is an apocalyptic number.

It is an amenable number.

161151097 is a deficient number, since it is larger than the sum of its proper divisors (1).

161151097 is an equidigital number, since it uses as much as digits as its factorization.

161151097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 161151097 is about 12694.5302000507. The cubic root of 161151097 is about 544.1823127857.

The spelling of 161151097 in words is "one hundred sixty-one million, one hundred fifty-one thousand, ninety-seven".