1555133 has 2 divisors, whose sum is σ = 1555134. Its totient is φ = 1555132.

The previous prime is 1555129. The next prime is 1555153. The reversal of 1555133 is 3315551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1530169 + 24964 = 1237^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555133 - 2² = 1555129 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1555099 and 1555108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777566 + 777567.

It is an arithmetic number, because the mean of its divisors is an integer number (777567).

2^1555133 is an apocalyptic number.

It is an amenable number.

1555133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555133 is an equidigital number, since it uses as much as digits as its factorization.

1555133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1125, while the sum is 23.

The square root of 1555133 is about 1247.0497183352. The cubic root of 1555133 is about 115.8570623482.

The spelling of 1555133 in words is "one million, five hundred fifty-five thousand, one hundred thirty-three".