5281666903 has 4 divisors (see below), whose sum is σ = 5345301528. Its totient is φ = 5218032280.

The previous prime is 5281666849. The next prime is 5281666919. The reversal of 5281666903 is 3096661825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5281666903 is a prime.

It is a super-2 number, since 2×5281666903² = 55792010548491222818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281666933) 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, 31817188 + ... + 31817353.

It is an arithmetic number, because the mean of its divisors is an integer number (1336325382).

Almost surely, 2^5281666903 is an apocalyptic number.

5281666903 is a deficient number, since it is larger than the sum of its proper divisors (63634625).

5281666903 is an equidigital number, since it uses as much as digits as its factorization.

5281666903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63634624.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 5281666903 is about 72675.0775919778. The cubic root of 5281666903 is about 1741.5007643730.

The spelling of 5281666903 in words is "five billion, two hundred eighty-one million, six hundred sixty-six thousand, nine hundred three".