15961123 has 8 divisors (see below), whose sum is σ = 16177616. Its totient is φ = 15746400.

The previous prime is 15961111. The next prime is 15961129. The reversal of 15961123 is 32116951.

15961123 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 not a de Polignac number, because 15961123 - 2¹³ = 15952931 is a prime.

It is a super-2 number, since 2×15961123² = 509514894842258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15961091 and 15961100.

It is not an unprimeable number, because it can be changed into a prime (15961129) 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, 29233 + ... + 29773.

It is an arithmetic number, because the mean of its divisors is an integer number (2022202).

Almost surely, 2^15961123 is an apocalyptic number.

15961123 is a deficient number, since it is larger than the sum of its proper divisors (216493).

15961123 is a wasteful number, since it uses less digits than its factorization.

15961123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its digits is 1620, while the sum is 28.

The square root of 15961123 is about 3995.1374194138. The cubic root of 15961123 is about 251.7799529931.

The spelling of 15961123 in words is "fifteen million, nine hundred sixty-one thousand, one hundred twenty-three".