548478765 has 24 divisors (see below), whose sum is σ = 951315768. Its totient is φ = 292331520.

The previous prime is 548478761. The next prime is 548478773. The reversal of 548478765 is 567874845.

It can be written as a sum of positive squares in 4 ways, for example, as 142778601 + 405700164 = 11949^2 + 20142^2 .

It is not a de Polignac number, because 548478765 - 2² = 548478761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548478761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90717 + ... + 96573.

It is an arithmetic number, because the mean of its divisors is an integer number (39638157).

Almost surely, 2^548478765 is an apocalyptic number.

It is an amenable number.

548478765 is a deficient number, since it is larger than the sum of its proper divisors (402837003).

548478765 is a wasteful number, since it uses less digits than its factorization.

548478765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949 (or 7946 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The square root of 548478765 is about 23419.6235025245. The cubic root of 548478765 is about 818.5651911609.

The spelling of 548478765 in words is "five hundred forty-eight million, four hundred seventy-eight thousand, seven hundred sixty-five".