478372481 has 4 divisors (see below), whose sum is σ = 503550000. Its totient is φ = 453194964.

The previous prime is 478372471. The next prime is 478372483. The reversal of 478372481 is 184273874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478372481 is a prime.

It is a super-2 number, since 2×478372481² = 457680461156190722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478372483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12588731 + ... + 12588768.

It is an arithmetic number, because the mean of its divisors is an integer number (125887500).

Almost surely, 2^478372481 is an apocalyptic number.

It is an amenable number.

478372481 is a deficient number, since it is larger than the sum of its proper divisors (25177519).

478372481 is a wasteful number, since it uses less digits than its factorization.

478372481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25177518.

The product of its digits is 301056, while the sum is 44.

The square root of 478372481 is about 21871.7278924186. The cubic root of 478372481 is about 782.0875926373.

The spelling of 478372481 in words is "four hundred seventy-eight million, three hundred seventy-two thousand, four hundred eighty-one".