405455553 has 12 divisors (see below), whose sum is σ = 586020708. Its totient is φ = 270136320.

The previous prime is 405455549. The next prime is 405455563. The reversal of 405455553 is 355554504.

405455553 is a `hidden beast` number, since 4 + 0 + 54 + 55 + 553 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 353139264 + 52316289 = 18792^2 + 7233^2 .

It is not a de Polignac number, because 405455553 - 2² = 405455549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405455513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2401 + ... + 28577.

It is an arithmetic number, because the mean of its divisors is an integer number (48835059).

Almost surely, 2^405455553 is an apocalyptic number.

It is an amenable number.

405455553 is a deficient number, since it is larger than the sum of its proper divisors (180565155).

405455553 is a wasteful number, since it uses less digits than its factorization.

405455553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27904 (or 27901 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

The square root of 405455553 is about 20135.9269217983. The cubic root of 405455553 is about 740.1409233682.

The spelling of 405455553 in words is "four hundred five million, four hundred fifty-five thousand, five hundred fifty-three".