5781481 has 4 divisors (see below), whose sum is σ = 5794432. Its totient is φ = 5768532.

The previous prime is 5781467. The next prime is 5781499. The reversal of 5781481 is 1841875.

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 a de Polignac number, because none of the positive numbers 2^k-5781481 is a prime.

It is a super-2 number, since 2×5781481² = 66851045106722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5781431) 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, 5781 + ... + 6706.

It is an arithmetic number, because the mean of its divisors is an integer number (1448608).

Almost surely, 2^5781481 is an apocalyptic number.

It is an amenable number.

5781481 is a deficient number, since it is larger than the sum of its proper divisors (12951).

5781481 is a wasteful number, since it uses less digits than its factorization.

5781481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12950.

The product of its digits is 8960, while the sum is 34.

The square root of 5781481 is about 2404.4710437017. The cubic root of 5781481 is about 179.4787492009.

The spelling of 5781481 in words is "five million, seven hundred eighty-one thousand, four hundred eighty-one".