2115035551 has 4 divisors (see below), whose sum is σ = 2172198712. Its totient is φ = 2057872392.

The previous prime is 2115035513. The next prime is 2115035557. The reversal of 2115035551 is 1555305112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115035551 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 (2115035557) 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, 28581525 + ... + 28581598.

It is an arithmetic number, because the mean of its divisors is an integer number (543049678).

Almost surely, 2^2115035551 is an apocalyptic number.

2115035551 is a deficient number, since it is larger than the sum of its proper divisors (57163161).

2115035551 is an equidigital number, since it uses as much as digits as its factorization.

2115035551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57163160.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 2115035551 is about 45989.5156638989. The cubic root of 2115035551 is about 1283.6281242321.

The spelling of 2115035551 in words is "two billion, one hundred fifteen million, thirty-five thousand, five hundred fifty-one".