478533631 has 4 divisors (see below), whose sum is σ = 485675992. Its totient is φ = 471391272.

The previous prime is 478533619. The next prime is 478533637. The reversal of 478533631 is 136335874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478533631 - 2⁵ = 478533599 is a prime.

It is a super-2 number, since 2×478533631² = 457988871996088322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478533637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571080 + ... + 3571213.

It is an arithmetic number, because the mean of its divisors is an integer number (121418998).

Almost surely, 2^478533631 is an apocalyptic number.

478533631 is a deficient number, since it is larger than the sum of its proper divisors (7142361).

478533631 is an equidigital number, since it uses as much as digits as its factorization.

478533631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142360.

The product of its digits is 181440, while the sum is 40.

The square root of 478533631 is about 21875.4115618427. The cubic root of 478533631 is about 782.1754037544.

It can be divided in two parts, 4785 and 33631, that added together give a 4-th power (38416 = 14⁴).

The spelling of 478533631 in words is "four hundred seventy-eight million, five hundred thirty-three thousand, six hundred thirty-one".