7887541 has 4 divisors (see below), whose sum is σ = 8351532. Its totient is φ = 7423552.

The previous prime is 7887521. The next prime is 7887557. The reversal of 7887541 is 1457887.

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 3786916 + 4100625 = 1946^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 7887541 - 2¹⁵ = 7854773 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7887494 and 7887503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7887511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231970 + ... + 232003.

It is an arithmetic number, because the mean of its divisors is an integer number (2087883).

Almost surely, 2^7887541 is an apocalyptic number.

It is an amenable number.

7887541 is a deficient number, since it is larger than the sum of its proper divisors (463991).

7887541 is a wasteful number, since it uses less digits than its factorization.

7887541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463990.

The product of its digits is 62720, while the sum is 40.

The square root of 7887541 is about 2808.4766333370. The cubic root of 7887541 is about 199.0584157185.

The spelling of 7887541 in words is "seven million, eight hundred eighty-seven thousand, five hundred forty-one".