5220991 has 8 divisors (see below), whose sum is σ = 5548400. Its totient is φ = 4898880.

The previous prime is 5220983. The next prime is 5220997. The reversal of 5220991 is 1990225.

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

It is a cyclic number.

It is not a de Polignac number, because 5220991 - 2³ = 5220983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220997) 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, 811 + ... + 3331.

It is an arithmetic number, because the mean of its divisors is an integer number (693550).

Almost surely, 2^5220991 is an apocalyptic number.

5220991 is a deficient number, since it is larger than the sum of its proper divisors (327409).

5220991 is a wasteful number, since it uses less digits than its factorization.

5220991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 5220991 is about 2284.9487959252. The cubic root of 5220991 is about 173.4806263612.

The spelling of 5220991 in words is "five million, two hundred twenty thousand, nine hundred ninety-one".