5109921 has 12 divisors (see below), whose sum is σ = 7400848. Its totient is φ = 3397464.

The previous prime is 5109919. The next prime is 5109961. The reversal of 5109921 is 1299015.

It is a happy number.

5109921 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5109921 - 2¹ = 5109919 is a prime.

It is a super-2 number, since 2×5109921² = 52222585252482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5109961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5346 + ... + 6228.

Almost surely, 2^5109921 is an apocalyptic number.

It is an amenable number.

5109921 is a deficient number, since it is larger than the sum of its proper divisors (2290927).

5109921 is a wasteful number, since it uses less digits than its factorization.

5109921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 5109921 is about 2260.5134372527. The cubic root of 5109921 is about 172.2416043088.

The spelling of 5109921 in words is "five million, one hundred nine thousand, nine hundred twenty-one".