2566051751 has 4 divisors (see below), whose sum is σ = 2569060872. Its totient is φ = 2563042632.

The previous prime is 2566051727. The next prime is 2566051781. The reversal of 2566051751 is 1571506652.

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-2566051751 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 (2566051721) 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, 1503281 + ... + 1504986.

It is an arithmetic number, because the mean of its divisors is an integer number (642265218).

Almost surely, 2^2566051751 is an apocalyptic number.

2566051751 is a deficient number, since it is larger than the sum of its proper divisors (3009121).

2566051751 is an equidigital number, since it uses as much as digits as its factorization.

2566051751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009120.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 2566051751 is about 50656.2113762962. The cubic root of 2566051751 is about 1369.0578620246.

The spelling of 2566051751 in words is "two billion, five hundred sixty-six million, fifty-one thousand, seven hundred fifty-one".