155938 has 4 divisors (see below), whose sum is σ = 233910. Its totient is φ = 77968.

The previous prime is 155921. The next prime is 156007. The reversal of 155938 is 839551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 124609 + 31329 = 353^2 + 177^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38983 + ... + 38986.

2¹⁵⁵⁹³⁸ is an apocalyptic number.

155938 is a deficient number, since it is larger than the sum of its proper divisors (77972).

155938 is an equidigital number, since it uses as much as digits as its factorization.

155938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77971.

The product of its digits is 5400, while the sum is 31.

The square root of 155938 is about 394.8898580617. The cubic root of 155938 is about 53.8249935694.

The spelling of 155938 in words is "one hundred fifty-five thousand, nine hundred thirty-eight".