1955123 has 2 divisors, whose sum is σ = 1955124. Its totient is φ = 1955122.

The previous prime is 1955113. The next prime is 1955131. The reversal of 1955123 is 3215591.

It is a strong prime.

It is an emirp because it is prime and its reverse (3215591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1955123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1955092 and 1955101.

It is not a weakly prime, because it can be changed into another prime (1955113) 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, 977561 + 977562.

It is an arithmetic number, because the mean of its divisors is an integer number (977562).

2^1955123 is an apocalyptic number.

1955123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955123 is an equidigital number, since it uses as much as digits as its factorization.

1955123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1955123 is about 1398.2571294293. The cubic root of 1955123 is about 125.0426094738.

The spelling of 1955123 in words is "one million, nine hundred fifty-five thousand, one hundred twenty-three".