155954 has 4 divisors (see below), whose sum is σ = 233934. Its totient is φ = 77976.

The previous prime is 155921. The next prime is 156007. The reversal of 155954 is 459551.

155954 = 227² + 228² + 229².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459551 = 59 ⋅7789.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 29929 = 355^2 + 173^2 .

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 as a sum of consecutive naturals, namely, 38987 + ... + 38990.

2¹⁵⁵⁹⁵⁴ is an apocalyptic number.

155954 is a deficient number, since it is larger than the sum of its proper divisors (77980).

155954 is an equidigital number, since it uses as much as digits as its factorization.

155954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77979.

The product of its digits is 4500, while the sum is 29.

The square root of 155954 is about 394.9101163556. The cubic root of 155954 is about 53.8268344088.

It can be divided in two parts, 1 and 55954, that added together give a palindrome (55955).

The spelling of 155954 in words is "one hundred fifty-five thousand, nine hundred fifty-four".