2520479385 has 36 divisors (see below), whose sum is σ = 4401820332. Its totient is φ = 1334136576.

The previous prime is 2520479383. The next prime is 2520479389. The reversal of 2520479385 is 5839740252.

2520479385 is a `hidden beast` number, since 2 + 520 + 47 + 9 + 3 + 85 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 97772544 + 2422706841 = 9888^2 + 49221^2 .

It is not a de Polignac number, because 2520479385 - 2¹ = 2520479383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520479385.

It is not an unprimeable number, because it can be changed into a prime (2520479383) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4429381 + ... + 4429949.

It is an arithmetic number, because the mean of its divisors is an integer number (122272787).

Almost surely, 2^2520479385 is an apocalyptic number.

It is an amenable number.

2520479385 is a deficient number, since it is larger than the sum of its proper divisors (1881340947).

2520479385 is an equidigital number, since it uses as much as digits as its factorization.

2520479385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 2520479385 is about 50204.3761538773. The cubic root of 2520479385 is about 1360.9047081877.

The spelling of 2520479385 in words is "two billion, five hundred twenty million, four hundred seventy-nine thousand, three hundred eighty-five".