51283787 has 2 divisors, whose sum is σ = 51283788. Its totient is φ = 51283786.

The previous prime is 51283783. The next prime is 51283801. The reversal of 51283787 is 78738215.

51283787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51283787 - 2² = 51283783 is a prime.

It is a super-2 number, since 2×51283787² = 5260053618122738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51283783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25641893 + 25641894.

It is an arithmetic number, because the mean of its divisors is an integer number (25641894).

Almost surely, 2^51283787 is an apocalyptic number.

51283787 is a deficient number, since it is larger than the sum of its proper divisors (1).

51283787 is an equidigital number, since it uses as much as digits as its factorization.

51283787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

The square root of 51283787 is about 7161.2699292793. The cubic root of 51283787 is about 371.5295508834.

The spelling of 51283787 in words is "fifty-one million, two hundred eighty-three thousand, seven hundred eighty-seven".