155764 has 12 divisors (see below), whose sum is σ = 311584. Its totient is φ = 66744.

The previous prime is 155747. The next prime is 155773. The reversal of 155764 is 467551.

155764 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 5563 = 155764 / (1 + 5 + 5 + 7 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754 + ... + 2809.

2¹⁵⁵⁷⁶⁴ is an apocalyptic number.

155764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155764 is a wasteful number, since it uses less digits than its factorization.

155764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574 (or 5572 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 155764 is about 394.6694819719. The cubic root of 155764 is about 53.8049663054.

It can be divided in two parts, 155 and 764, that added together give a palindrome (919).

The spelling of 155764 in words is "one hundred fifty-five thousand, seven hundred sixty-four".