405523355 has 12 divisors (see below), whose sum is σ = 516938880. Its totient is φ = 305334144.

The previous prime is 405523351. The next prime is 405523399. The reversal of 405523355 is 553325504.

It is not a de Polignac number, because 405523355 - 2² = 405523351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405523351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138875 + ... + 141764.

It is an arithmetic number, because the mean of its divisors is an integer number (43078240).

Almost surely, 2^405523355 is an apocalyptic number.

405523355 is a deficient number, since it is larger than the sum of its proper divisors (111415525).

405523355 is a wasteful number, since it uses less digits than its factorization.

405523355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280678 (or 280661 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 32.

The square root of 405523355 is about 20137.6104590391. The cubic root of 405523355 is about 740.1821775719.

Adding to 405523355 its reverse (553325504), we get a palindrome (958848859).

The spelling of 405523355 in words is "four hundred five million, five hundred twenty-three thousand, three hundred fifty-five".