405556052 has 24 divisors (see below), whose sum is σ = 776466432. Its totient is φ = 183814400.

The previous prime is 405556049. The next prime is 405556057. The reversal of 405556052 is 250655504.

It is a super-2 number, since 2×405556052² = 328951422627653408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405556057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2477 + ... + 28587.

It is an arithmetic number, because the mean of its divisors is an integer number (32352768).

Almost surely, 2^405556052 is an apocalyptic number.

It is an amenable number.

405556052 is a deficient number, since it is larger than the sum of its proper divisors (370910380).

405556052 is a wasteful number, since it uses less digits than its factorization.

405556052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26479 (or 26477 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 405556052 is about 20138.4222817975. The cubic root of 405556052 is about 740.2020704551.

The spelling of 405556052 in words is "four hundred five million, five hundred fifty-six thousand, fifty-two".