5307991 has 8 divisors (see below), whose sum is σ = 5744480. Its totient is φ = 4875552.

The previous prime is 5307979. The next prime is 5308001. The reversal of 5307991 is 1997035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5307991 is a prime.

It is a Duffinian number.

5307991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5307091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2086 + ... + 3868.

It is an arithmetic number, because the mean of its divisors is an integer number (718060).

Almost surely, 2^5307991 is an apocalyptic number.

5307991 is a deficient number, since it is larger than the sum of its proper divisors (436489).

5307991 is a wasteful number, since it uses less digits than its factorization.

5307991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 5307991 is about 2303.9077672511. The cubic root of 5307991 is about 174.4389213801.

The spelling of 5307991 in words is "five million, three hundred seven thousand, nine hundred ninety-one".