155994 has 8 divisors (see below), whose sum is σ = 312000. Its totient is φ = 51996.

The previous prime is 155921. The next prime is 156007. The reversal of 155994 is 499551.

It is a sphenic number, since it is the product of 3 distinct primes.

155994 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12994 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (39000).

2¹⁵⁵⁹⁹⁴ is an apocalyptic number.

155994 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.

155994 is a wasteful number, since it uses less digits than its factorization.

155994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26004.

The product of its digits is 8100, while the sum is 33.

The square root of 155994 is about 394.9607575443. The cubic root of 155994 is about 53.8314359566.

Subtracting from 155994 its sum of digits (33), we obtain a triangular number (155961 = T₅₅₈).

It can be divided in two parts, 1559 and 94, that added together give a triangular number (1653 = T₅₇).

The spelling of 155994 in words is "one hundred fifty-five thousand, nine hundred ninety-four".