161201524 has 36 divisors (see below), whose sum is σ = 314514144. Its totient is φ = 72226000.

The previous prime is 161201507. The next prime is 161201527. The reversal of 161201524 is 425102161.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 161201495 and 161201504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161201527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32019 + ... + 36709.

It is an arithmetic number, because the mean of its divisors is an integer number (8736504).

Almost surely, 2^161201524 is an apocalyptic number.

It is an amenable number.

161201524 is a deficient number, since it is larger than the sum of its proper divisors (153312620).

161201524 is a wasteful number, since it uses less digits than its factorization.

161201524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788 (or 4775 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 161201524 is about 12696.5162150883. The cubic root of 161201524 is about 544.2390682576.

Adding to 161201524 its reverse (425102161), we get a palindrome (586303685).

The spelling of 161201524 in words is "one hundred sixty-one million, two hundred one thousand, five hundred twenty-four".