16211161 has 8 divisors (see below), whose sum is σ = 17110880. Its totient is φ = 15316128.

The previous prime is 16211101. The next prime is 16211189. The reversal of 16211161 is 16111261.

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

It is not a de Polignac number, because 16211161 - 2⁷ = 16211033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16211101) 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, 7750 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (2138860).

Almost surely, 2^16211161 is an apocalyptic number.

It is an amenable number.

16211161 is a deficient number, since it is larger than the sum of its proper divisors (899719).

16211161 is a wasteful number, since it uses less digits than its factorization.

16211161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343.

The product of its digits is 72, while the sum is 19.

The square root of 16211161 is about 4026.3086071487. The cubic root of 16211161 is about 253.0878945966.

The spelling of 16211161 in words is "sixteen million, two hundred eleven thousand, one hundred sixty-one".