405775056 has 40 divisors (see below), whose sum is σ = 1059071104. Its totient is φ = 133862400.

The previous prime is 405775021. The next prime is 405775061. The reversal of 405775056 is 650577504.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38920 + ... + 48231.

Almost surely, 2^405775056 is an apocalyptic number.

It is an amenable number.

405775056 is an abundant number, since it is smaller than the sum of its proper divisors (653296048).

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

405775056 is a wasteful number, since it uses less digits than its factorization.

405775056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87259 (or 87253 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 405775056 is about 20143.8590145980. The cubic root of 405775056 is about 740.3352851221.

The spelling of 405775056 in words is "four hundred five million, seven hundred seventy-five thousand, fifty-six".