478243155 has 16 divisors (see below), whose sum is σ = 824050080. Its totient is φ = 235442688.

The previous prime is 478243153. The next prime is 478243159. The reversal of 478243155 is 551342874.

It is not a de Polignac number, because 478243155 - 2¹ = 478243153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (478243153) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1226070 + ... + 1226459.

It is an arithmetic number, because the mean of its divisors is an integer number (51503130).

Almost surely, 2^478243155 is an apocalyptic number.

478243155 is a deficient number, since it is larger than the sum of its proper divisors (345806925).

478243155 is a wasteful number, since it uses less digits than its factorization.

478243155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452550.

The product of its digits is 134400, while the sum is 39.

The square root of 478243155 is about 21868.7712274833. The cubic root of 478243155 is about 782.0171082483.

The spelling of 478243155 in words is "four hundred seventy-eight million, two hundred forty-three thousand, one hundred fifty-five".