355000405 has 4 divisors (see below), whose sum is σ = 426000492. Its totient is φ = 284000320.

The previous prime is 355000369. The next prime is 355000421. The reversal of 355000405 is 504000553.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56160036 + 298840369 = 7494^2 + 17287^2 .

It is not a de Polignac number, because 355000405 - 2⁹ = 354999893 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 35500036 + ... + 35500045.

It is an arithmetic number, because the mean of its divisors is an integer number (106500123).

Almost surely, 2^355000405 is an apocalyptic number.

It is an amenable number.

355000405 is a deficient number, since it is larger than the sum of its proper divisors (71000087).

355000405 is an equidigital number, since it uses as much as digits as its factorization.

355000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71000086.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 355000405 is about 18841.4544289978. The cubic root of 355000405 is about 708.0701443744.

Adding to 355000405 its reverse (504000553), we get a palindrome (859000958).

The spelling of 355000405 in words is "three hundred fifty-five million, four hundred five", and thus it is an aban number.