405050 has 12 divisors (see below), whose sum is σ = 753486. Its totient is φ = 162000.

The previous prime is 405049. The next prime is 405071. The reversal of 405050 is 50504.

It can be written as a sum of positive squares in 3 ways, for example, as 395641 + 9409 = 629^2 + 97^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4001 + ... + 4100.

2⁴⁰⁵⁰⁵⁰ is an apocalyptic number.

405050 is a deficient number, since it is larger than the sum of its proper divisors (348436).

405050 is a wasteful number, since it uses less digits than its factorization.

405050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113 (or 8108 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 405050 is about 636.4353855656. The cubic root of 405050 is about 73.9894068109.

Adding to 405050 its reverse (50504), we get a palindrome (455554).

It can be divided in two parts, 4050 and 50, that multiplied together give a square (202500 = 450²).

The spelling of 405050 in words is "four hundred five thousand, fifty".