405204545 has 8 divisors (see below), whose sum is σ = 511837440. Its totient is φ = 307102320.

The previous prime is 405204533. The next prime is 405204587. The reversal of 405204545 is 545402504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405204545 - 2¹⁰ = 405203521 is a prime.

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, 2132561 + ... + 2132750.

It is an arithmetic number, because the mean of its divisors is an integer number (63979680).

Almost surely, 2^405204545 is an apocalyptic number.

It is an amenable number.

405204545 is a deficient number, since it is larger than the sum of its proper divisors (106632895).

405204545 is a wasteful number, since it uses less digits than its factorization.

405204545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265335.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 405204545 is about 20129.6931173826. The cubic root of 405204545 is about 739.9881572246.

The spelling of 405204545 in words is "four hundred five million, two hundred four thousand, five hundred forty-five".