161151251 has 2 divisors, whose sum is σ = 161151252. Its totient is φ = 161151250.

The previous prime is 161151227. The next prime is 161151253. The reversal of 161151251 is 152151161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161151251 - 2¹⁴ = 161134867 is a prime.

It is a Sophie Germain prime.

Together with 161151253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161151253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80575625 + 80575626.

It is an arithmetic number, because the mean of its divisors is an integer number (80575626).

Almost surely, 2^161151251 is an apocalyptic number.

161151251 is a deficient number, since it is larger than the sum of its proper divisors (1).

161151251 is an equidigital number, since it uses as much as digits as its factorization.

161151251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 23.

The square root of 161151251 is about 12694.5362656538. The cubic root of 161151251 is about 544.1824861303.

The spelling of 161151251 in words is "one hundred sixty-one million, one hundred fifty-one thousand, two hundred fifty-one".