5621023 has 2 divisors, whose sum is σ = 5621024. Its totient is φ = 5621022.

The previous prime is 5620997. The next prime is 5621027. The reversal of 5621023 is 3201265.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5621023 - 2⁵ = 5620991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5621027) 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, 2810511 + 2810512.

It is an arithmetic number, because the mean of its divisors is an integer number (2810512).

Almost surely, 2^5621023 is an apocalyptic number.

5621023 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621023 is an equidigital number, since it uses as much as digits as its factorization.

5621023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 5621023 is about 2370.8696716606. The cubic root of 5621023 is about 177.8027419659.

Adding to 5621023 its reverse (3201265), we get a palindrome (8822288).

The spelling of 5621023 in words is "five million, six hundred twenty-one thousand, twenty-three".