2520778583 has 4 divisors (see below), whose sum is σ = 2653451160. Its totient is φ = 2388106008.

The previous prime is 2520778567. The next prime is 2520778607. The reversal of 2520778583 is 3858770252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2520778583 - 2⁴ = 2520778567 is a prime.

It is a super-2 number, since 2×2520778583² = 12708649329022975778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520778543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66336260 + ... + 66336297.

It is an arithmetic number, because the mean of its divisors is an integer number (663362790).

Almost surely, 2^2520778583 is an apocalyptic number.

2520778583 is a deficient number, since it is larger than the sum of its proper divisors (132672577).

2520778583 is a wasteful number, since it uses less digits than its factorization.

2520778583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132672576.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 2520778583 is about 50207.3558654506. The cubic root of 2520778583 is about 1360.9585555972.

The spelling of 2520778583 in words is "two billion, five hundred twenty million, seven hundred seventy-eight thousand, five hundred eighty-three".