51006705 has 16 divisors (see below), whose sum is σ = 82065984. Its totient is φ = 27051840.

The previous prime is 51006691. The next prime is 51006707. The reversal of 51006705 is 50760015.

It is not a de Polignac number, because 51006705 - 2⁴ = 51006689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51006707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6679 + ... + 12108.

It is an arithmetic number, because the mean of its divisors is an integer number (5129124).

Almost surely, 2^51006705 is an apocalyptic number.

It is an amenable number.

51006705 is a deficient number, since it is larger than the sum of its proper divisors (31059279).

51006705 is a wasteful number, since it uses less digits than its factorization.

51006705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18976.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 51006705 is about 7141.8978570125. The cubic root of 51006705 is about 370.8592278626.

The spelling of 51006705 in words is "fifty-one million, six thousand, seven hundred five".