478623531 has 8 divisors (see below), whose sum is σ = 638266320. Its totient is φ = 319031552.

The previous prime is 478623521. The next prime is 478623553. The reversal of 478623531 is 135326874.

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

It is a cyclic number.

It is not a de Polignac number, because 478623531 - 2⁷ = 478623403 is a prime.

It is a super-2 number, since 2×478623531² = 458160968853815922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478623531.

It is not an unprimeable number, because it can be changed into a prime (478623521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27091 + ... + 41123.

It is an arithmetic number, because the mean of its divisors is an integer number (79783290).

Almost surely, 2^478623531 is an apocalyptic number.

478623531 is a deficient number, since it is larger than the sum of its proper divisors (159642789).

478623531 is a wasteful number, since it uses less digits than its factorization.

478623531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25405.

The product of its digits is 120960, while the sum is 39.

The square root of 478623531 is about 21877.4662838273. The cubic root of 478623531 is about 782.2243819670.

The spelling of 478623531 in words is "four hundred seventy-eight million, six hundred twenty-three thousand, five hundred thirty-one".