161524949 has 8 divisors (see below), whose sum is σ = 164557440. Its totient is φ = 158502400.

The previous prime is 161524907. The next prime is 161524963. The reversal of 161524949 is 949425161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161524949 - 2¹⁶ = 161459413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161524969) 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 in 7 ways as a sum of consecutive naturals, for example, 35684 + ... + 39954.

It is an arithmetic number, because the mean of its divisors is an integer number (20569680).

Almost surely, 2^161524949 is an apocalyptic number.

It is an amenable number.

161524949 is a deficient number, since it is larger than the sum of its proper divisors (3032491).

161524949 is an equidigital number, since it uses as much as digits as its factorization.

161524949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971.

The product of its digits is 77760, while the sum is 41.

The square root of 161524949 is about 12709.2465945075. The cubic root of 161524949 is about 544.6028012388.

The spelling of 161524949 in words is "one hundred sixty-one million, five hundred twenty-four thousand, nine hundred forty-nine".