2551021351 has 16 divisors (see below), whose sum is σ = 2661055488. Its totient is φ = 2443370400.

The previous prime is 2551021327. The next prime is 2551021367. The reversal of 2551021351 is 1531201552.

It is a cyclic number.

It is not a de Polignac number, because 2551021351 - 2²¹ = 2548924199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551021381) 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 15 ways as a sum of consecutive naturals, for example, 953746 + ... + 956416.

It is an arithmetic number, because the mean of its divisors is an integer number (166315968).

Almost surely, 2^2551021351 is an apocalyptic number.

2551021351 is a deficient number, since it is larger than the sum of its proper divisors (110034137).

2551021351 is a wasteful number, since it uses less digits than its factorization.

2551021351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2551021351 is about 50507.6365612172. The cubic root of 2551021351 is about 1366.3795846003.

The spelling of 2551021351 in words is "two billion, five hundred fifty-one million, twenty-one thousand, three hundred fifty-one".