478459551 has 4 divisors (see below), whose sum is σ = 637946072. Its totient is φ = 318973032.

The previous prime is 478459537. The next prime is 478459601. The reversal of 478459551 is 155954874.

It is a happy number.

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

It is not a de Polignac number, because 478459551 - 2⁵ = 478459519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478459551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478459511) 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, 79743256 + ... + 79743261.

It is an arithmetic number, because the mean of its divisors is an integer number (159486518).

Almost surely, 2^478459551 is an apocalyptic number.

478459551 is a deficient number, since it is larger than the sum of its proper divisors (159486521).

478459551 is a wasteful number, since it uses less digits than its factorization.

478459551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159486520.

The product of its digits is 1008000, while the sum is 48.

The square root of 478459551 is about 21873.7182710210. The cubic root of 478459551 is about 782.1350397894.

The spelling of 478459551 in words is "four hundred seventy-eight million, four hundred fifty-nine thousand, five hundred fifty-one".