355613 has 4 divisors (see below), whose sum is σ = 357600. Its totient is φ = 353628.

The previous prime is 355609. The next prime is 355633. The reversal of 355613 is 316553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316553 = 79 ⋅4007.

It is a cyclic number.

It is not a de Polignac number, because 355613 - 2² = 355609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355633) 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, 695 + ... + 1092.

It is an arithmetic number, because the mean of its divisors is an integer number (89400).

2³⁵⁵⁶¹³ is an apocalyptic number.

It is an amenable number.

355613 is a deficient number, since it is larger than the sum of its proper divisors (1987).

355613 is a wasteful number, since it uses less digits than its factorization.

355613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986.

The product of its digits is 1350, while the sum is 23.

The square root of 355613 is about 596.3329606856. The cubic root of 355613 is about 70.8477196462.

Subtracting from 355613 its reverse (316553), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 355613 in words is "three hundred fifty-five thousand, six hundred thirteen".