161527 has 2 divisors, whose sum is σ = 161528. Its totient is φ = 161526.

The previous prime is 161521. The next prime is 161531. The reversal of 161527 is 725161.

It is a strong prime.

It is an emirp because it is prime and its reverse (725161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161498 and 161507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80763 + 80764.

It is an arithmetic number, because the mean of its divisors is an integer number (80764).

2¹⁶¹⁵²⁷ is an apocalyptic number.

161527 is a deficient number, since it is larger than the sum of its proper divisors (1).

161527 is an equidigital number, since it uses as much as digits as its factorization.

161527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 22.

The square root of 161527 is about 401.9042174449. The cubic root of 161527 is about 54.4605106302.

Adding to 161527 its reverse (725161), we get a palindrome (886688).

The spelling of 161527 in words is "one hundred sixty-one thousand, five hundred twenty-seven".