5281691 has 4 divisors (see below), whose sum is σ = 5288712. Its totient is φ = 5274672.

The previous prime is 5281681. The next prime is 5281693. The reversal of 5281691 is 1961825.

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-5281691 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5281693) 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, 2225 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (1322178).

Almost surely, 2^5281691 is an apocalyptic number.

5281691 is a deficient number, since it is larger than the sum of its proper divisors (7021).

5281691 is an equidigital number, since it uses as much as digits as its factorization.

5281691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020.

The product of its digits is 4320, while the sum is 32.

The square root of 5281691 is about 2298.1929858043. The cubic root of 5281691 is about 174.1503412835.

The spelling of 5281691 in words is "five million, two hundred eighty-one thousand, six hundred ninety-one".