5621123 has 4 divisors (see below), whose sum is σ = 5635680. Its totient is φ = 5606568.

The previous prime is 5621117. The next prime is 5621159. The reversal of 5621123 is 3211265.

5621123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211265 = 5 ⋅642253.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5621123 is a prime.

It is a super-2 number, since 2×5621123² = 63194047562258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5621095 and 5621104.

It is not an unprimeable number, because it can be changed into a prime (5621113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6683 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (1408920).

Almost surely, 2^5621123 is an apocalyptic number.

5621123 is a deficient number, since it is larger than the sum of its proper divisors (14557).

5621123 is a wasteful number, since it uses less digits than its factorization.

5621123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14556.

The product of its digits is 360, while the sum is 20.

The square root of 5621123 is about 2370.8907608745. The cubic root of 5621123 is about 177.8037963510.

Adding to 5621123 its reverse (3211265), we get a palindrome (8832388).

It can be divided in two parts, 562 and 1123, that multiplied together give a triangular number (631126 = T₁₁₂₃).

The spelling of 5621123 in words is "five million, six hundred twenty-one thousand, one hundred twenty-three".