355220 has 12 divisors (see below), whose sum is σ = 746004. Its totient is φ = 142080.

The previous prime is 355211. The next prime is 355261. The reversal of 355220 is 22553.

It can be written as a sum of positive squares in 2 ways, for example, as 126736 + 228484 = 356^2 + 478^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8861 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (62167).

2³⁵⁵²²⁰ is an apocalyptic number.

It is an amenable number.

355220 is an abundant number, since it is smaller than the sum of its proper divisors (390784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355220 is a wasteful number, since it uses less digits than its factorization.

355220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17770 (or 17768 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 355220 is about 596.0033556953. The cubic root of 355220 is about 70.8216112859.

Adding to 355220 its reverse (22553), we get a palindrome (377773).

It can be divided in two parts, 355 and 220, that added together give a palindrome (575).

The spelling of 355220 in words is "three hundred fifty-five thousand, two hundred twenty".