2153512511 has 4 divisors (see below), whose sum is σ = 2157794352. Its totient is φ = 2149230672.

The previous prime is 2153512499. The next prime is 2153512513. The reversal of 2153512511 is 1152153512.

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 2153512511 - 2²⁶ = 2086403647 is a prime.

It is a super-2 number, since 2×2153512511² = 9275232270067050242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153512513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140166 + ... + 2141171.

It is an arithmetic number, because the mean of its divisors is an integer number (539448588).

Almost surely, 2^2153512511 is an apocalyptic number.

2153512511 is a deficient number, since it is larger than the sum of its proper divisors (4281841).

2153512511 is an equidigital number, since it uses as much as digits as its factorization.

2153512511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281840.

The product of its digits is 1500, while the sum is 26.

The square root of 2153512511 is about 46405.9534003990. The cubic root of 2153512511 is about 1291.3653614476.

The spelling of 2153512511 in words is "two billion, one hundred fifty-three million, five hundred twelve thousand, five hundred eleven".