2551051111 has 4 divisors (see below), whose sum is σ = 2915486992. Its totient is φ = 2186615232.

The previous prime is 2551051073. The next prime is 2551051123. The reversal of 2551051111 is 1111501552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2551051111 - 2¹¹ = 2551049063 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 (2551054111) 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 3 ways as a sum of consecutive naturals, for example, 182217930 + ... + 182217943.

It is an arithmetic number, because the mean of its divisors is an integer number (728871748).

Almost surely, 2^2551051111 is an apocalyptic number.

2551051111 is a deficient number, since it is larger than the sum of its proper divisors (364435881).

2551051111 is an equidigital number, since it uses as much as digits as its factorization.

2551051111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364435880.

The product of its (nonzero) digits is 250, while the sum is 22.

The square root of 2551051111 is about 50507.9311692728. The cubic root of 2551051111 is about 1366.3848979360.

Adding to 2551051111 its reverse (1111501552), we get a palindrome (3662552663).

The spelling of 2551051111 in words is "two billion, five hundred fifty-one million, fifty-one thousand, one hundred eleven".