2520520987 has 8 divisors (see below), whose sum is σ = 2636549280. Its totient is φ = 2405029440.

The previous prime is 2520520969. The next prime is 2520521021. The reversal of 2520520987 is 7890250252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2520520987 - 2²³ = 2512132379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520520907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124564 + ... + 143377.

It is an arithmetic number, because the mean of its divisors is an integer number (329568660).

Almost surely, 2^2520520987 is an apocalyptic number.

2520520987 is a deficient number, since it is larger than the sum of its proper divisors (116028293).

2520520987 is a wasteful number, since it uses less digits than its factorization.

2520520987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268373.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 2520520987 is about 50204.7904785988. The cubic root of 2520520987 is about 1360.9121956584.

The spelling of 2520520987 in words is "two billion, five hundred twenty million, five hundred twenty thousand, nine hundred eighty-seven".