2520871421 has 8 divisors (see below), whose sum is σ = 2564457888. Its totient is φ = 2477358000.

The previous prime is 2520871411. The next prime is 2520871453. The reversal of 2520871421 is 1241780252.

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 2520871421 - 2¹⁰ = 2520870397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520871411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 53786 + ... + 89076.

It is an arithmetic number, because the mean of its divisors is an integer number (320557236).

Almost surely, 2^2520871421 is an apocalyptic number.

It is an amenable number.

2520871421 is a deficient number, since it is larger than the sum of its proper divisors (43586467).

2520871421 is a wasteful number, since it uses less digits than its factorization.

2520871421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36523.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2520871421 is about 50208.2804027384. The cubic root of 2520871421 is about 1360.9752630171.

The spelling of 2520871421 in words is "two billion, five hundred twenty million, eight hundred seventy-one thousand, four hundred twenty-one".