5591123 has 2 divisors, whose sum is σ = 5591124. Its totient is φ = 5591122.

The previous prime is 5591101. The next prime is 5591137. The reversal of 5591123 is 3211955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5591123 - 2⁶ = 5591059 is a prime.

It is a super-2 number, since 2×5591123² = 62521312802258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5591092 and 5591101.

It is not a weakly prime, because it can be changed into another prime (5593123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795561 + 2795562.

It is an arithmetic number, because the mean of its divisors is an integer number (2795562).

Almost surely, 2^5591123 is an apocalyptic number.

5591123 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591123 is an equidigital number, since it uses as much as digits as its factorization.

5591123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 26.

The square root of 5591123 is about 2364.5555607767. Note that the first 4 decimals coincide. The cubic root of 5591123 is about 177.4869182980.

The spelling of 5591123 in words is "five million, five hundred ninety-one thousand, one hundred twenty-three".