479778553 has 4 divisors (see below), whose sum is σ = 480433828. Its totient is φ = 479123280.

The previous prime is 479778547. The next prime is 479778569. The reversal of 479778553 is 355877974.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 300432889 + 179345664 = 17333^2 + 13392^2 .

It is a cyclic number.

It is not a de Polignac number, because 479778553 - 2¹⁷ = 479647481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 479778494 and 479778503.

It is not an unprimeable number, because it can be changed into a prime (479778053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326538 + ... + 328003.

It is an arithmetic number, because the mean of its divisors is an integer number (120108457).

Almost surely, 2^479778553 is an apocalyptic number.

It is an amenable number.

479778553 is a deficient number, since it is larger than the sum of its proper divisors (655275).

479778553 is an equidigital number, since it uses as much as digits as its factorization.

479778553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655274.

The product of its digits is 7408800, while the sum is 55.

The square root of 479778553 is about 21903.8479039643. The cubic root of 479778553 is about 782.8531019771.

The spelling of 479778553 in words is "four hundred seventy-nine million, seven hundred seventy-eight thousand, five hundred fifty-three".