155313 has 6 divisors (see below), whose sum is σ = 224354. Its totient is φ = 103536.

The previous prime is 155303. The next prime is 155317. The reversal of 155313 is 313551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 91809 + 63504 = 303^2 + 252^2 .

It is a de Polignac number, because none of the positive numbers 2^k-155313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8620 + ... + 8637.

2¹⁵⁵³¹³ is an apocalyptic number.

It is an amenable number.

155313 is a deficient number, since it is larger than the sum of its proper divisors (69041).

155313 is a wasteful number, since it uses less digits than its factorization.

155313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17263 (or 17260 counting only the distinct ones).

The product of its digits is 225, while the sum is 18.

The square root of 155313 is about 394.0977036218. The cubic root of 155313 is about 53.7529870343.

Adding to 155313 its reverse (313551), we get a palindrome (468864).

The spelling of 155313 in words is "one hundred fifty-five thousand, three hundred thirteen".