15741961 has 4 divisors (see below), whose sum is σ = 15897924. Its totient is φ = 15586000.

The previous prime is 15741931. The next prime is 15741977. The reversal of 15741961 is 16914751.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15327225 + 414736 = 3915^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 15741961 - 2⁷ = 15741833 is a prime.

It is a super-2 number, since 2×15741961² = 495618672251042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15741911) 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, 77830 + ... + 78031.

It is an arithmetic number, because the mean of its divisors is an integer number (3974481).

Almost surely, 2^15741961 is an apocalyptic number.

It is an amenable number.

15741961 is a deficient number, since it is larger than the sum of its proper divisors (155963).

15741961 is a wasteful number, since it uses less digits than its factorization.

15741961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155962.

The product of its digits is 7560, while the sum is 34.

The square root of 15741961 is about 3967.6140185255. The cubic root of 15741961 is about 250.6222419748.

The spelling of 15741961 in words is "fifteen million, seven hundred forty-one thousand, nine hundred sixty-one".