155322 has 12 divisors (see below), whose sum is σ = 336570. Its totient is φ = 51768.

The previous prime is 155317. The next prime is 155327. The reversal of 155322 is 223551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155317) and next prime (155327).

It can be written as a sum of positive squares in only one way, i.e., 114921 + 40401 = 339^2 + 201^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 8629 = 155322 / (1 + 5 + 5 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 155295 and 155304.

It is not an unprimeable number, because it can be changed into a prime (155327) by changing a digit.

155322 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4297 + ... + 4332.

2¹⁵⁵³²² is an apocalyptic number.

155322 is an abundant number, since it is smaller than the sum of its proper divisors (181248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155322 is a wasteful number, since it uses less digits than its factorization.

155322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8637 (or 8634 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 155322 is about 394.1091219447. The cubic root of 155322 is about 53.7540252980.

Adding to 155322 its reverse (223551), we get a palindrome (378873).

The spelling of 155322 in words is "one hundred fifty-five thousand, three hundred twenty-two".