355601 has 4 divisors (see below), whose sum is σ = 367104. Its totient is φ = 344100.

The previous prime is 355591. The next prime is 355609. The reversal of 355601 is 106553.

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: 106553 = 127 ⋅839.

It is a de Polignac number, because none of the positive numbers 2^k-355601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5705 + ... + 5766.

It is an arithmetic number, because the mean of its divisors is an integer number (91776).

2³⁵⁵⁶⁰¹ is an apocalyptic number.

355601 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

355601 is a deficient number, since it is larger than the sum of its proper divisors (11503).

355601 is a wasteful number, since it uses less digits than its factorization.

355601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 355601 is about 596.3228991075. The cubic root of 355601 is about 70.8469227291.

The spelling of 355601 in words is "three hundred fifty-five thousand, six hundred one".