355591 has 2 divisors, whose sum is σ = 355592. Its totient is φ = 355590.

The previous prime is 355573. The next prime is 355609. The reversal of 355591 is 195553.

It is a balanced prime because it is at equal distance from previous prime (355573) and next prime (355609).

It is a cyclic number.

It is not a de Polignac number, because 355591 - 2⁵ = 355559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177795 + 177796.

It is an arithmetic number, because the mean of its divisors is an integer number (177796).

2³⁵⁵⁵⁹¹ is an apocalyptic number.

355591 is a deficient number, since it is larger than the sum of its proper divisors (1).

355591 is an equidigital number, since it uses as much as digits as its factorization.

355591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3375, while the sum is 28.

The square root of 355591 is about 596.3145143295. The cubic root of 355591 is about 70.8462586179.

It can be divided in two parts, 355 and 591, that added together give a triangular number (946 = T₄₃).

The spelling of 355591 in words is "three hundred fifty-five thousand, five hundred ninety-one".