161456371 has 2 divisors, whose sum is σ = 161456372. Its totient is φ = 161456370.

The previous prime is 161456341. The next prime is 161456381. The reversal of 161456371 is 173654161.

It is a strong prime.

It is an emirp because it is prime and its reverse (173654161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161456371 - 2¹³ = 161448179 is a prime.

It is not a weakly prime, because it can be changed into another prime (161456341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80728185 + 80728186.

It is an arithmetic number, because the mean of its divisors is an integer number (80728186).

Almost surely, 2^161456371 is an apocalyptic number.

161456371 is a deficient number, since it is larger than the sum of its proper divisors (1).

161456371 is an equidigital number, since it uses as much as digits as its factorization.

161456371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 161456371 is about 12706.5483511456. The cubic root of 161456371 is about 544.5257170527.

The spelling of 161456371 in words is "one hundred sixty-one million, four hundred fifty-six thousand, three hundred seventy-one".