2551521343 has 32 divisors (see below), whose sum is σ = 3126090240. Its totient is φ = 2034046080.

The previous prime is 2551521341. The next prime is 2551521361. The reversal of 2551521343 is 3431251552.

It is a cyclic number.

It is not a de Polignac number, because 2551521343 - 2¹ = 2551521341 is a prime.

It is a super-2 number, since 2×2551521343² = 13020522327569047298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551521341) 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 31 ways as a sum of consecutive naturals, for example, 1997421 + ... + 1998697.

It is an arithmetic number, because the mean of its divisors is an integer number (97690320).

Almost surely, 2^2551521343 is an apocalyptic number.

2551521343 is a deficient number, since it is larger than the sum of its proper divisors (574568897).

2551521343 is a wasteful number, since it uses less digits than its factorization.

2551521343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567.

The product of its digits is 18000, while the sum is 31.

The square root of 2551521343 is about 50512.5859860689. The cubic root of 2551521343 is about 1366.4688474403.

Adding to 2551521343 its reverse (3431251552), we get a palindrome (5982772895).

The spelling of 2551521343 in words is "two billion, five hundred fifty-one million, five hundred twenty-one thousand, three hundred forty-three".