2520720775 has 24 divisors (see below), whose sum is σ = 3149017200. Its totient is φ = 2001596160.

The previous prime is 2520720749. The next prime is 2520720791. The reversal of 2520720775 is 5770270252.

It is not a de Polignac number, because 2520720775 - 2⁵ = 2520720743 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2402451 + ... + 2403499.

It is an arithmetic number, because the mean of its divisors is an integer number (131209050).

Almost surely, 2^2520720775 is an apocalyptic number.

2520720775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2520720775 is a deficient number, since it is larger than the sum of its proper divisors (628296425).

2520720775 is a wasteful number, since it uses less digits than its factorization.

2520720775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 2520720775 is about 50206.7801696145. The cubic root of 2520720775 is about 1360.9481520795.

The spelling of 2520720775 in words is "two billion, five hundred twenty million, seven hundred twenty thousand, seven hundred seventy-five".