155602 has 4 divisors (see below), whose sum is σ = 233406. Its totient is φ = 77800.

The previous prime is 155599. The next prime is 155609. The reversal of 155602 is 206551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 130321 + 25281 = 361^2 + 159^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 155602.

It is not an unprimeable number, because it can be changed into a prime (155609) by changing a digit.

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 as a sum of consecutive naturals, namely, 38899 + ... + 38902.

2¹⁵⁵⁶⁰² is an apocalyptic number.

155602 is a deficient number, since it is larger than the sum of its proper divisors (77804).

155602 is an equidigital number, since it uses as much as digits as its factorization.

155602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77803.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 155602 is about 394.4641935588. The cubic root of 155602 is about 53.7863068204.

It can be divided in two parts, 155 and 602, that added together give a palindrome (757).

The spelling of 155602 in words is "one hundred fifty-five thousand, six hundred two".