2111162551 has 2 divisors, whose sum is σ = 2111162552. Its totient is φ = 2111162550.

The previous prime is 2111162549. The next prime is 2111162567. The reversal of 2111162551 is 1552611112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111162551 - 2¹ = 2111162549 is a prime.

Together with 2111162549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111162531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055581275 + 1055581276.

It is an arithmetic number, because the mean of its divisors is an integer number (1055581276).

Almost surely, 2^2111162551 is an apocalyptic number.

2111162551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111162551 is an equidigital number, since it uses as much as digits as its factorization.

2111162551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 25.

The square root of 2111162551 is about 45947.3889464897. The cubic root of 2111162551 is about 1282.8441296289.

Adding to 2111162551 its reverse (1552611112), we get a palindrome (3663773663).

The spelling of 2111162551 in words is "two billion, one hundred eleven million, one hundred sixty-two thousand, five hundred fifty-one".