405405552 has 20 divisors (see below), whose sum is σ = 1047297800. Its totient is φ = 135135168.

The previous prime is 405405551. The next prime is 405405577. The reversal of 405405552 is 255504504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405405551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4222927 + ... + 4223022.

It is an arithmetic number, because the mean of its divisors is an integer number (52364890).

Almost surely, 2^405405552 is an apocalyptic number.

It is an amenable number.

405405552 is an abundant number, since it is smaller than the sum of its proper divisors (641892248).

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

405405552 is a wasteful number, since it uses less digits than its factorization.

405405552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8445960 (or 8445954 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 405405552 is about 20134.6852967708. The cubic root of 405405552 is about 740.1104972567.

The spelling of 405405552 in words is "four hundred five million, four hundred five thousand, five hundred fifty-two".