2051113503 has 4 divisors (see below), whose sum is σ = 2734818008. Its totient is φ = 1367409000.

The previous prime is 2051113501. The next prime is 2051113507. The reversal of 2051113503 is 3053111502.

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

It is not a de Polignac number, because 2051113503 - 2¹ = 2051113501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2051113503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051113501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341852248 + ... + 341852253.

It is an arithmetic number, because the mean of its divisors is an integer number (683704502).

Almost surely, 2^2051113503 is an apocalyptic number.

2051113503 is a deficient number, since it is larger than the sum of its proper divisors (683704505).

2051113503 is an equidigital number, since it uses as much as digits as its factorization.

2051113503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683704504.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 2051113503 is about 45289.2206049077. The cubic root of 2051113503 is about 1270.5640545271.

The spelling of 2051113503 in words is "two billion, fifty-one million, one hundred thirteen thousand, five hundred three".