1655233 has 4 divisors (see below), whose sum is σ = 1712340. Its totient is φ = 1598128.

The previous prime is 1655231. The next prime is 1655237. The reversal of 1655233 is 3325561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 620944 + 1034289 = 788^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655233 - 2¹ = 1655231 is a prime.

It is a Duffinian number.

1655233 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1655198 and 1655207.

It is not an unprimeable number, because it can be changed into a prime (1655231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28510 + ... + 28567.

It is an arithmetic number, because the mean of its divisors is an integer number (428085).

2^1655233 is an apocalyptic number.

It is an amenable number.

1655233 is a deficient number, since it is larger than the sum of its proper divisors (57107).

1655233 is an equidigital number, since it uses as much as digits as its factorization.

1655233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57106.

The product of its digits is 2700, while the sum is 25.

The square root of 1655233 is about 1286.5585878614. The cubic root of 1655233 is about 118.2913655756.

The spelling of 1655233 in words is "one million, six hundred fifty-five thousand, two hundred thirty-three".