161049424 has 10 divisors (see below), whose sum is σ = 312033290. Its totient is φ = 80524704.

The previous prime is 161049407. The next prime is 161049451. The reversal of 161049424 is 424940161.

It can be written as a sum of positive squares in only one way, i.e., 110923024 + 50126400 = 10532^2 + 7080^2 .

It is a congruent number.

It is an unprimeable number.

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, 5032779 + ... + 5032810.

It is an arithmetic number, because the mean of its divisors is an integer number (31203329).

Almost surely, 2^161049424 is an apocalyptic number.

It is an amenable number.

161049424 is a deficient number, since it is larger than the sum of its proper divisors (150983866).

161049424 is a wasteful number, since it uses less digits than its factorization.

161049424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065597 (or 10065591 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 161049424 is about 12690.5249694408. The cubic root of 161049424 is about 544.0678440472.

Adding to 161049424 its reverse (424940161), we get a palindrome (585989585).

The spelling of 161049424 in words is "one hundred sixty-one million, forty-nine thousand, four hundred twenty-four".