2051245243 has 8 divisors (see below), whose sum is σ = 2066951520. Its totient is φ = 2035599360.

The previous prime is 2051245237. The next prime is 2051245253. The reversal of 2051245243 is 3425421502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051245243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051245223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54298 + ... + 83968.

It is an arithmetic number, because the mean of its divisors is an integer number (258368940).

Almost surely, 2^2051245243 is an apocalyptic number.

2051245243 is a deficient number, since it is larger than the sum of its proper divisors (15706277).

2051245243 is a wasteful number, since it uses less digits than its factorization.

2051245243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30197.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2051245243 is about 45290.6750115297. The cubic root of 2051245243 is about 1270.5912560975.

Adding to 2051245243 its reverse (3425421502), we get a palindrome (5476666745).

The spelling of 2051245243 in words is "two billion, fifty-one million, two hundred forty-five thousand, two hundred forty-three".