478211755 has 16 divisors (see below), whose sum is σ = 656204544. Its totient is φ = 327731040.

The previous prime is 478211753. The next prime is 478211761. The reversal of 478211755 is 557112874.

It is not a de Polignac number, because 478211755 - 2¹ = 478211753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478211753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93084 + ... + 98086.

It is an arithmetic number, because the mean of its divisors is an integer number (41012784).

Almost surely, 2^478211755 is an apocalyptic number.

478211755 is a deficient number, since it is larger than the sum of its proper divisors (177992789).

478211755 is a wasteful number, since it uses less digits than its factorization.

478211755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746.

The product of its digits is 78400, while the sum is 40.

The square root of 478211755 is about 21868.0532969901. The cubic root of 478211755 is about 781.9999929139. Note that the first 5 decimals are identical.

The spelling of 478211755 in words is "four hundred seventy-eight million, two hundred eleven thousand, seven hundred fifty-five".