161524 has 12 divisors (see below), whose sum is σ = 308448. Its totient is φ = 73400.

The previous prime is 161521. The next prime is 161527. The reversal of 161524 is 425161.

It is an interprime number because it is at equal distance from previous prime (161521) and next prime (161527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792 + ... + 1879.

It is an arithmetic number, because the mean of its divisors is an integer number (25704).

2¹⁶¹⁵²⁴ is an apocalyptic number.

It is an amenable number.

161524 is a deficient number, since it is larger than the sum of its proper divisors (146924).

161524 is a wasteful number, since it uses less digits than its factorization.

161524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3684 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 161524 is about 401.9004851950. The cubic root of 161524 is about 54.4601734677.

Adding to 161524 its reverse (425161), we get a palindrome (586685).

It can be divided in two parts, 16 and 1524, that added together give a triangular number (1540 = T₅₅).

The spelling of 161524 in words is "one hundred sixty-one thousand, five hundred twenty-four".