5149621 has 2 divisors, whose sum is σ = 5149622. Its totient is φ = 5149620.

The previous prime is 5149619. The next prime is 5149643. The reversal of 5149621 is 1269415.

5149621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 680625 = 2114^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 5149621 - 2¹ = 5149619 is a prime.

Together with 5149619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5149621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5149601) 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 as a sum of consecutive naturals, namely, 2574810 + 2574811.

It is an arithmetic number, because the mean of its divisors is an integer number (2574811).

Almost surely, 2^5149621 is an apocalyptic number.

It is an amenable number.

5149621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5149621 is an equidigital number, since it uses as much as digits as its factorization.

5149621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 5149621 is about 2269.2776383687. The cubic root of 5149621 is about 172.6865139369.

The spelling of 5149621 in words is "five million, one hundred forty-nine thousand, six hundred twenty-one".