51402667 has 2 divisors, whose sum is σ = 51402668. Its totient is φ = 51402666.

The previous prime is 51402641. The next prime is 51402671. The reversal of 51402667 is 76620415.

It is a happy number.

51402667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51402667 - 2¹⁹ = 50878379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51402607) 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, 25701333 + 25701334.

It is an arithmetic number, because the mean of its divisors is an integer number (25701334).

Almost surely, 2^51402667 is an apocalyptic number.

51402667 is a deficient number, since it is larger than the sum of its proper divisors (1).

51402667 is an equidigital number, since it uses as much as digits as its factorization.

51402667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 51402667 is about 7169.5653285259. The cubic root of 51402667 is about 371.8164079427.

The spelling of 51402667 in words is "fifty-one million, four hundred two thousand, six hundred sixty-seven".