15961941 has 12 divisors (see below), whose sum is σ = 23910432. Its totient is φ = 10641132.

The previous prime is 15961909. The next prime is 15961943. The reversal of 15961941 is 14916951.

It is not a de Polignac number, because 15961941 - 2⁵ = 15961909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15961896 and 15961905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15961943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32601 + ... + 33086.

It is an arithmetic number, because the mean of its divisors is an integer number (1992536).

Almost surely, 2^15961941 is an apocalyptic number.

It is an amenable number.

15961941 is a deficient number, since it is larger than the sum of its proper divisors (7948491).

15961941 is an frugal number, since it uses more digits than its factorization.

15961941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65702 (or 65690 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 15961941 is about 3995.2397925531. The cubic root of 15961941 is about 251.7842541207.

The spelling of 15961941 in words is "fifteen million, nine hundred sixty-one thousand, nine hundred forty-one".