51061667 has 2 divisors, whose sum is σ = 51061668. Its totient is φ = 51061666.

The previous prime is 51061657. The next prime is 51061691. The reversal of 51061667 is 76616015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51061667 - 2⁴ = 51061651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51061657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530833 + 25530834.

It is an arithmetic number, because the mean of its divisors is an integer number (25530834).

Almost surely, 2^51061667 is an apocalyptic number.

51061667 is a deficient number, since it is larger than the sum of its proper divisors (1).

51061667 is an equidigital number, since it uses as much as digits as its factorization.

51061667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 51061667 is about 7145.7446777785. The cubic root of 51061667 is about 370.9923858334.

The spelling of 51061667 in words is "fifty-one million, sixty-one thousand, six hundred sixty-seven".