51241787 has 2 divisors, whose sum is σ = 51241788. Its totient is φ = 51241786.

The previous prime is 51241783. The next prime is 51241807. The reversal of 51241787 is 78714215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51241787 - 2² = 51241783 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51241783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620893 + 25620894.

It is an arithmetic number, because the mean of its divisors is an integer number (25620894).

Almost surely, 2^51241787 is an apocalyptic number.

51241787 is a deficient number, since it is larger than the sum of its proper divisors (1).

51241787 is an equidigital number, since it uses as much as digits as its factorization.

51241787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 35.

The square root of 51241787 is about 7158.3368878532. The cubic root of 51241787 is about 371.4280990484.

The spelling of 51241787 in words is "fifty-one million, two hundred forty-one thousand, seven hundred eighty-seven".