155622 has 16 divisors (see below), whose sum is σ = 320112. Its totient is φ = 50400.

The previous prime is 155621. The next prime is 155627. The reversal of 155622 is 226551.

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (20007).

2¹⁵⁵⁶²² is an apocalyptic number.

155622 is an abundant number, since it is smaller than the sum of its proper divisors (164490).

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

155622 is a wasteful number, since it uses less digits than its factorization.

155622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its digits is 600, while the sum is 21.

The square root of 155622 is about 394.4895435877. The cubic root of 155622 is about 53.7886111611.

It can be divided in two parts, 155 and 622, that added together give a palindrome (777).

The spelling of 155622 in words is "one hundred fifty-five thousand, six hundred twenty-two".