161465567 has 2 divisors, whose sum is σ = 161465568. Its totient is φ = 161465566.

The previous prime is 161465527. The next prime is 161465599. The reversal of 161465567 is 765564161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161465567 - 2¹⁸ = 161203423 is a prime.

It is a super-2 number, since 2×161465567² = 52142258653262978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161465527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80732783 + 80732784.

It is an arithmetic number, because the mean of its divisors is an integer number (80732784).

Almost surely, 2^161465567 is an apocalyptic number.

161465567 is a deficient number, since it is larger than the sum of its proper divisors (1).

161465567 is an equidigital number, since it uses as much as digits as its factorization.

161465567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 161465567 is about 12706.9102066553. The cubic root of 161465567 is about 544.5360549609.

The spelling of 161465567 in words is "one hundred sixty-one million, four hundred sixty-five thousand, five hundred sixty-seven".