2520067821 has 8 divisors (see below), whose sum is σ = 3406119360. Its totient is φ = 1657030752.

The previous prime is 2520067813. The next prime is 2520067859. The reversal of 2520067821 is 1287600252.

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

It is not a de Polignac number, because 2520067821 - 2³ = 2520067813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520067871) 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, 5753361 + ... + 5753798.

It is an arithmetic number, because the mean of its divisors is an integer number (425764920).

Almost surely, 2^2520067821 is an apocalyptic number.

It is an amenable number.

2520067821 is a deficient number, since it is larger than the sum of its proper divisors (886051539).

2520067821 is a wasteful number, since it uses less digits than its factorization.

2520067821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11507235.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 2520067821 is about 50200.2771008288. The cubic root of 2520067821 is about 1360.8306310264.

The spelling of 2520067821 in words is "two billion, five hundred twenty million, sixty-seven thousand, eight hundred twenty-one".