51364787 has 2 divisors, whose sum is σ = 51364788. Its totient is φ = 51364786.

The previous prime is 51364763. The next prime is 51364793. The reversal of 51364787 is 78746315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51364787 - 2¹⁴ = 51348403 is a prime.

It is not a weakly prime, because it can be changed into another prime (51363787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25682393 + 25682394.

It is an arithmetic number, because the mean of its divisors is an integer number (25682394).

Almost surely, 2^51364787 is an apocalyptic number.

51364787 is a deficient number, since it is larger than the sum of its proper divisors (1).

51364787 is an equidigital number, since it uses as much as digits as its factorization.

51364787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 51364787 is about 7166.9231194425. The cubic root of 51364787 is about 371.7250516799.

The spelling of 51364787 in words is "fifty-one million, three hundred sixty-four thousand, seven hundred eighty-seven".