1355749 has 2 divisors, whose sum is σ = 1355750. Its totient is φ = 1355748.

The previous prime is 1355743. The next prime is 1355759. The reversal of 1355749 is 9475531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 294849 = 1030^2 + 543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355749 - 2³ = 1355741 is a prime.

1355749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355741) 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, 677874 + 677875.

It is an arithmetic number, because the mean of its divisors is an integer number (677875).

2^1355749 is an apocalyptic number.

It is an amenable number.

1355749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355749 is an equidigital number, since it uses as much as digits as its factorization.

1355749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 1355749 is about 1164.3663512830. The cubic root of 1355749 is about 110.6776079487.

The spelling of 1355749 in words is "one million, three hundred fifty-five thousand, seven hundred forty-nine".