405055545 has 16 divisors (see below), whose sum is σ = 651350400. Its totient is φ = 214942464.

The previous prime is 405055543. The next prime is 405055561. The reversal of 405055545 is 545550504.

It is not a de Polignac number, because 405055545 - 2¹ = 405055543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405055543) 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 15 ways as a sum of consecutive naturals, for example, 64864 + ... + 70833.

It is an arithmetic number, because the mean of its divisors is an integer number (40709400).

Almost surely, 2^405055545 is an apocalyptic number.

It is an amenable number.

405055545 is a deficient number, since it is larger than the sum of its proper divisors (246294855).

405055545 is a wasteful number, since it uses less digits than its factorization.

405055545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135904.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 405055545 is about 20125.9917768044. The cubic root of 405055545 is about 739.8974443949.

It can be divided in two parts, 4050 and 55545, that added together give a palindrome (59595).

The spelling of 405055545 in words is "four hundred five million, fifty-five thousand, five hundred forty-five".