2520531990 has 48 divisors (see below), whose sum is σ = 6713231616. Its totient is φ = 655747200.

The previous prime is 2520531967. The next prime is 2520531991. The reversal of 2520531990 is 991350252.

It is a happy number.

2520531990 is a `hidden beast` number, since 252 + 0 + 5 + 319 + 90 = 666.

It is a super-2 number, since 2×2520531990² = 12706163025226720200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520531991) 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 23 ways as a sum of consecutive naturals, for example, 337846 + ... + 345225.

It is an arithmetic number, because the mean of its divisors is an integer number (139858992).

Almost surely, 2^2520531990 is an apocalyptic number.

2520531990 is an abundant number, since it is smaller than the sum of its proper divisors (4192699626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2520531990 is a wasteful number, since it uses less digits than its factorization.

2520531990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683125 (or 683122 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 2520531990 is about 50204.9000596555. The cubic root of 2520531990 is about 1360.9141759494.

The spelling of 2520531990 in words is "two billion, five hundred twenty million, five hundred thirty-one thousand, nine hundred ninety".