5581667 has 16 divisors (see below), whose sum is σ = 6961920. Its totient is φ = 4357152.

The previous prime is 5581651. The next prime is 5581679. The reversal of 5581667 is 7661855.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5581667 - 2⁴ = 5581651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5581667.

It is not an unprimeable number, because it can be changed into a prime (5581637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7184 + ... + 7922.

It is an arithmetic number, because the mean of its divisors is an integer number (435120).

Almost surely, 2^5581667 is an apocalyptic number.

5581667 is a deficient number, since it is larger than the sum of its proper divisors (1380253).

5581667 is a wasteful number, since it uses less digits than its factorization.

5581667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its digits is 50400, while the sum is 38.

The square root of 5581667 is about 2362.5551845407. Note that the first 3 decimals coincide. The cubic root of 5581667 is about 177.3868034468.

The spelling of 5581667 in words is "five million, five hundred eighty-one thousand, six hundred sixty-seven".