4875781 has 4 divisors (see below), whose sum is σ = 4903200. Its totient is φ = 4848364.

The previous prime is 4875779. The next prime is 4875797. The reversal of 4875781 is 1875784.

4875781 is nontrivially palindromic in base 12.

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 4875781 - 2¹ = 4875779 is a prime.

It is a super-2 number, since 2×4875781² = 47546480719922, which contains 22 as substring.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (4875721) 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, 13441 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (1225800).

Almost surely, 2^4875781 is an apocalyptic number.

4875781 is the 988-th centered decagonal number.

It is an amenable number.

4875781 is a deficient number, since it is larger than the sum of its proper divisors (27419).

4875781 is a wasteful number, since it uses less digits than its factorization.

4875781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27418.

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

The square root of 4875781 is about 2208.1170711717. The cubic root of 4875781 is about 169.5696264916.

The spelling of 4875781 in words is "four million, eight hundred seventy-five thousand, seven hundred eighty-one".