355665123 has 48 divisors (see below), whose sum is σ = 615663360. Its totient is φ = 195307200.

The previous prime is 355665103. The next prime is 355665253. The reversal of 355665123 is 321566553.

It is not a de Polignac number, because 355665123 - 2⁵ = 355665091 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (355665103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39153 + ... + 47373.

It is an arithmetic number, because the mean of its divisors is an integer number (12826320).

Almost surely, 2^355665123 is an apocalyptic number.

355665123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

355665123 is a deficient number, since it is larger than the sum of its proper divisors (259998237).

355665123 is a wasteful number, since it uses less digits than its factorization.

355665123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280 (or 8277 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 355665123 is about 18859.0859534602. The cubic root of 355665123 is about 708.5118091379.

The spelling of 355665123 in words is "three hundred fifty-five million, six hundred sixty-five thousand, one hundred twenty-three".