5010991 has 4 divisors (see below), whose sum is σ = 5105592. Its totient is φ = 4916392.

The previous prime is 5010977. The next prime is 5011001. The reversal of 5010991 is 1990105.

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-5010991 is a prime.

It is a super-2 number, since 2×5010991² = 50220061604162, 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 (5010931) 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, 47221 + ... + 47326.

It is an arithmetic number, because the mean of its divisors is an integer number (1276398).

Almost surely, 2^5010991 is an apocalyptic number.

5010991 is a deficient number, since it is larger than the sum of its proper divisors (94601).

5010991 is an equidigital number, since it uses as much as digits as its factorization.

5010991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94600.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 5010991 is about 2238.5242906880. The cubic root of 5010991 is about 171.1227986089.

The spelling of 5010991 in words is "five million, ten thousand, nine hundred ninety-one".