15997941 has 12 divisors (see below), whose sum is σ = 23144940. Its totient is φ = 10648320.

The previous prime is 15997889. The next prime is 15997957. The reversal of 15997941 is 14979951.

It can be written as a sum of positive squares in 2 ways, for example, as 8820900 + 7177041 = 2970^2 + 2679^2 .

It is not a de Polignac number, because 15997941 - 2¹⁴ = 15981557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997841) 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, 7525 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (1928745).

Almost surely, 2^15997941 is an apocalyptic number.

It is an amenable number.

15997941 is a deficient number, since it is larger than the sum of its proper divisors (7146999).

15997941 is a wasteful number, since it uses less digits than its factorization.

15997941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836 (or 2833 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 15997941 is about 3999.7426167192. The cubic root of 15997941 is about 251.9734004426.

The spelling of 15997941 in words is "fifteen million, nine hundred ninety-seven thousand, nine hundred forty-one".