2151532111 has 2 divisors, whose sum is σ = 2151532112. Its totient is φ = 2151532110.

The previous prime is 2151532093. The next prime is 2151532147. The reversal of 2151532111 is 1112351512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151532111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151532181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075766055 + 1075766056.

It is an arithmetic number, because the mean of its divisors is an integer number (1075766056).

Almost surely, 2^2151532111 is an apocalyptic number.

2151532111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151532111 is an equidigital number, since it uses as much as digits as its factorization.

2151532111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 22.

The square root of 2151532111 is about 46384.6107130371. The cubic root of 2151532111 is about 1290.9693875374.

Adding to 2151532111 its reverse (1112351512), we get a palindrome (3263883623).

The spelling of 2151532111 in words is "two billion, one hundred fifty-one million, five hundred thirty-two thousand, one hundred eleven".