16161235 has 4 divisors (see below), whose sum is σ = 19393488. Its totient is φ = 12928984.

The previous prime is 16161209. The next prime is 16161253. The reversal of 16161235 is 53216161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16161235 - 2⁷ = 16161107 is a prime.

It is a super-2 number, since 2×16161235² = 522371033450450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616119 + ... + 1616128.

It is an arithmetic number, because the mean of its divisors is an integer number (4848372).

Almost surely, 2^16161235 is an apocalyptic number.

16161235 is a deficient number, since it is larger than the sum of its proper divisors (3232253).

16161235 is an equidigital number, since it uses as much as digits as its factorization.

16161235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232252.

The product of its digits is 1080, while the sum is 25.

The square root of 16161235 is about 4020.1038543799. The cubic root of 16161235 is about 252.8278132871.

Adding to 16161235 its reverse (53216161), we get a palindrome (69377396).

The spelling of 16161235 in words is "sixteen million, one hundred sixty-one thousand, two hundred thirty-five".