355987 has 4 divisors (see below), whose sum is σ = 360360. Its totient is φ = 351616.

The previous prime is 355969. The next prime is 356023. The reversal of 355987 is 789553.

355987 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is not a de Polignac number, because 355987 - 2¹¹ = 353939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2062 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2³⁵⁵⁹⁸⁷ is an apocalyptic number.

355987 is a deficient number, since it is larger than the sum of its proper divisors (4373).

355987 is an equidigital number, since it uses as much as digits as its factorization.

355987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its digits is 37800, while the sum is 37.

The square root of 355987 is about 596.6464614828. The cubic root of 355987 is about 70.8725479132.

The spelling of 355987 in words is "three hundred fifty-five thousand, nine hundred eighty-seven".