7991541 has 12 divisors (see below), whose sum is σ = 11971232. Its totient is φ = 5327532.

The previous prime is 7991537. The next prime is 7991563. The reversal of 7991541 is 1451997.

It is not a de Polignac number, because 7991541 - 2² = 7991537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7991496 and 7991505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991531) 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, 16201 + ... + 16686.

Almost surely, 2^7991541 is an apocalyptic number.

It is an amenable number.

7991541 is a deficient number, since it is larger than the sum of its proper divisors (3979691).

7991541 is an equidigital number, since it uses as much as digits as its factorization.

7991541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902 (or 32890 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 7991541 is about 2826.9313751841. The cubic root of 7991541 is about 199.9294834734.

The spelling of 7991541 in words is "seven million, nine hundred ninety-one thousand, five hundred forty-one".