1655123 has 2 divisors, whose sum is σ = 1655124. Its totient is φ = 1655122.

The previous prime is 1655099. The next prime is 1655131. The reversal of 1655123 is 3215561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655123 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (1655153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827561 + 827562.

It is an arithmetic number, because the mean of its divisors is an integer number (827562).

2^1655123 is an apocalyptic number.

1655123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655123 is an equidigital number, since it uses as much as digits as its factorization.

1655123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 1655123 is about 1286.5158374462. The cubic root of 1655123 is about 118.2887451312.

The spelling of 1655123 in words is "one million, six hundred fifty-five thousand, one hundred twenty-three".