51606705 has 32 divisors (see below), whose sum is σ = 85598208. Its totient is φ = 26532800.

The previous prime is 51606697. The next prime is 51606707. The reversal of 51606705 is 50760615.

51606705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51606705 - 2³ = 51606697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51606707) 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 in 31 ways as a sum of consecutive naturals, for example, 49540 + ... + 50570.

It is an arithmetic number, because the mean of its divisors is an integer number (2674944).

Almost surely, 2^51606705 is an apocalyptic number.

It is an amenable number.

51606705 is a deficient number, since it is larger than the sum of its proper divisors (33991503).

51606705 is a wasteful number, since it uses less digits than its factorization.

51606705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 51606705 is about 7183.7806898596. The cubic root of 51606705 is about 372.3077217353.

The spelling of 51606705 in words is "fifty-one million, six hundred six thousand, seven hundred five".