155773 has 2 divisors, whose sum is σ = 155774. Its totient is φ = 155772.

The previous prime is 155747. The next prime is 155777. The reversal of 155773 is 377551.

155773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 38809 = 342^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 155773 - 2⁵ = 155741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77886 + 77887.

It is an arithmetic number, because the mean of its divisors is an integer number (77887).

2¹⁵⁵⁷⁷³ is an apocalyptic number.

It is an amenable number.

155773 is a deficient number, since it is larger than the sum of its proper divisors (1).

155773 is an equidigital number, since it uses as much as digits as its factorization.

155773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3675, while the sum is 28.

The square root of 155773 is about 394.6808837529. The cubic root of 155773 is about 53.8060025640.

The spelling of 155773 in words is "one hundred fifty-five thousand, seven hundred seventy-three".