51241807 has 2 divisors, whose sum is σ = 51241808. Its totient is φ = 51241806.

The previous prime is 51241787. The next prime is 51241819. The reversal of 51241807 is 70814215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51241807 - 2⁷ = 51241679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51241847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620903 + 25620904.

It is an arithmetic number, because the mean of its divisors is an integer number (25620904).

Almost surely, 2^51241807 is an apocalyptic number.

51241807 is a deficient number, since it is larger than the sum of its proper divisors (1).

51241807 is an equidigital number, since it uses as much as digits as its factorization.

51241807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51241807 is about 7158.3382848256. The cubic root of 51241807 is about 371.4281473720.

The spelling of 51241807 in words is "fifty-one million, two hundred forty-one thousand, eight hundred seven".