15983161 has 4 divisors (see below), whose sum is σ = 16824400. Its totient is φ = 15141924.

The previous prime is 15983141. The next prime is 15983171. The reversal of 15983161 is 16138951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16138951 = 1163 ⋅13877.

It is a cyclic number.

It is not a de Polignac number, because 15983161 - 2¹⁵ = 15950393 is a prime.

It is a super-2 number, since 2×15983161² = 510922871103842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15983141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420591 + ... + 420628.

It is an arithmetic number, because the mean of its divisors is an integer number (4206100).

Almost surely, 2^15983161 is an apocalyptic number.

It is an amenable number.

15983161 is a deficient number, since it is larger than the sum of its proper divisors (841239).

15983161 is an equidigital number, since it uses as much as digits as its factorization.

15983161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841238.

The product of its digits is 6480, while the sum is 34.

The square root of 15983161 is about 3997.8945708960. The cubic root of 15983161 is about 251.8957797386.

The spelling of 15983161 in words is "fifteen million, nine hundred eighty-three thousand, one hundred sixty-one".