1655023 has 2 divisors, whose sum is σ = 1655024. Its totient is φ = 1655022.

The previous prime is 1655021. The next prime is 1655029. The reversal of 1655023 is 3205561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1655023 - 2¹ = 1655021 is a prime.

It is a super-2 number, since 2×1655023² = 5478202261058, which contains 22 as substring.

Together with 1655021, it forms a pair of twin primes.

1655023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1654985 and 1655003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655021) 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 as a sum of consecutive naturals, namely, 827511 + 827512.

It is an arithmetic number, because the mean of its divisors is an integer number (827512).

2^1655023 is an apocalyptic number.

1655023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655023 is an equidigital number, since it uses as much as digits as its factorization.

1655023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1655023 is about 1286.4769721997. The cubic root of 1655023 is about 118.2863628082.

It can be divided in two parts, 165502 and 3, that multiplied together give a triangular number (496506 = T₉₉₆).

The spelling of 1655023 in words is "one million, six hundred fifty-five thousand, twenty-three".