155436 has 12 divisors (see below), whose sum is σ = 362712. Its totient is φ = 51808.

The previous prime is 155423. The next prime is 155443. The reversal of 155436 is 634551.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155436.

It is an unprimeable number.

155436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6465 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (30226).

2¹⁵⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

155436 is an abundant number, since it is smaller than the sum of its proper divisors (207276).

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

155436 is a wasteful number, since it uses less digits than its factorization.

155436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12958 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 155436 is about 394.2537254104. The cubic root of 155436 is about 53.7671731677.

Adding to 155436 its reverse (634551), we get a palindrome (789987).

The spelling of 155436 in words is "one hundred fifty-five thousand, four hundred thirty-six".