155944 has 16 divisors (see below), whose sum is σ = 296820. Its totient is φ = 76800.

The previous prime is 155921. The next prime is 156007. The reversal of 155944 is 449551.

It can be written as a sum of positive squares in 2 ways, for example, as 152100 + 3844 = 390^2 + 62^2 .

It is a super-2 number, since 2×155944² = 48637062272, which contains 22 as substring.

It is an Ulam number.

Its product of digits (3600) is a multiple of the sum of its prime factors (300).

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, 712 + ... + 904.

2¹⁵⁵⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

155944 is a deficient number, since it is larger than the sum of its proper divisors (140876).

155944 is a wasteful number, since it uses less digits than its factorization.

155944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 296 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 155944 is about 394.8974550437. The cubic root of 155944 is about 53.8256838990.

It can be divided in two parts, 1 and 55944, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 155944 in words is "one hundred fifty-five thousand, nine hundred forty-four".