2521421512 has 32 divisors (see below), whose sum is σ = 4798080000. Its totient is φ = 1242004608.

The previous prime is 2521421503. The next prime is 2521421527. The reversal of 2521421512 is 2151241252.

It is a super-2 number, since 2×2521421512² = 12715132882352732288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298564 + ... + 306892.

It is an arithmetic number, because the mean of its divisors is an integer number (149940000).

Almost surely, 2^2521421512 is an apocalyptic number.

It is an amenable number.

2521421512 is a deficient number, since it is larger than the sum of its proper divisors (2276658488).

2521421512 is a wasteful number, since it uses less digits than its factorization.

2521421512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893 (or 8889 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 2521421512 is about 50213.7581943435. The cubic root of 2521421512 is about 1361.0742507174.

Adding to 2521421512 its reverse (2151241252), we get a palindrome (4672662764).

The spelling of 2521421512 in words is "two billion, five hundred twenty-one million, four hundred twenty-one thousand, five hundred twelve".