478540751 has 4 divisors (see below), whose sum is σ = 515351592. Its totient is φ = 441729912.

The previous prime is 478540747. The next prime is 478540771. The reversal of 478540751 is 157045874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157045874 = 2 ⋅78522937.

It is not a de Polignac number, because 478540751 - 2² = 478540747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478540699 and 478540708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478540771) 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, 18405401 + ... + 18405426.

It is an arithmetic number, because the mean of its divisors is an integer number (128837898).

Almost surely, 2^478540751 is an apocalyptic number.

478540751 is a deficient number, since it is larger than the sum of its proper divisors (36810841).

478540751 is a wasteful number, since it uses less digits than its factorization.

478540751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36810840.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 478540751 is about 21875.5743010326. The cubic root of 478540751 is about 782.1792830089.

The spelling of 478540751 in words is "four hundred seventy-eight million, five hundred forty thousand, seven hundred fifty-one".