161500411 has 8 divisors (see below), whose sum is σ = 170657280. Its totient is φ = 152521512.

The previous prime is 161500397. The next prime is 161500453. The reversal of 161500411 is 114005161.

161500411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161500411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161500481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42625 + ... + 46258.

It is an arithmetic number, because the mean of its divisors is an integer number (21332160).

Almost surely, 2^161500411 is an apocalyptic number.

161500411 is a deficient number, since it is larger than the sum of its proper divisors (9156869).

161500411 is an equidigital number, since it uses as much as digits as its factorization.

161500411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88985.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 161500411 is about 12708.2811977073. The cubic root of 161500411 is about 544.5752221344.

Adding to 161500411 its reverse (114005161), we get a palindrome (275505572).

The spelling of 161500411 in words is "one hundred sixty-one million, five hundred thousand, four hundred eleven".