2051131751 has 2 divisors, whose sum is σ = 2051131752. Its totient is φ = 2051131750.

The previous prime is 2051131739. The next prime is 2051131759. The reversal of 2051131751 is 1571311502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2051131751 - 2¹⁸ = 2050869607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2051131751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051131759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025565875 + 1025565876.

It is an arithmetic number, because the mean of its divisors is an integer number (1025565876).

Almost surely, 2^2051131751 is an apocalyptic number.

2051131751 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051131751 is an equidigital number, since it uses as much as digits as its factorization.

2051131751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 2051131751 is about 45289.4220652019. The cubic root of 2051131751 is about 1270.5678224291.

The spelling of 2051131751 in words is "two billion, fifty-one million, one hundred thirty-one thousand, seven hundred fifty-one".