5781001 has 4 divisors (see below), whose sum is σ = 5788432. Its totient is φ = 5773572.

The previous prime is 5780987. The next prime is 5781007. The reversal of 5781001 is 1001875.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5781001 - 2¹¹ = 5778953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5781007) 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, 2391 + ... + 4156.

It is an arithmetic number, because the mean of its divisors is an integer number (1447108).

Almost surely, 2^5781001 is an apocalyptic number.

It is an amenable number.

5781001 is a deficient number, since it is larger than the sum of its proper divisors (7431).

5781001 is an equidigital number, since it uses as much as digits as its factorization.

5781001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7430.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 5781001 is about 2404.3712275770. The cubic root of 5781001 is about 179.4737820663.

Adding to 5781001 its reverse (1001875), we get a palindrome (6782876).

The spelling of 5781001 in words is "five million, seven hundred eighty-one thousand, one".