51700705 has 32 divisors (see below), whose sum is σ = 73903104. Its totient is φ = 33985536.

The previous prime is 51700703. The next prime is 51700741. The reversal of 51700705 is 50700715.

51700705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51700705 - 2¹ = 51700703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51700705.

It is not an unprimeable number, because it can be changed into a prime (51700703) 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, 86889 + ... + 87481.

It is an arithmetic number, because the mean of its divisors is an integer number (2309472).

Almost surely, 2^51700705 is an apocalyptic number.

It is an amenable number.

51700705 is a deficient number, since it is larger than the sum of its proper divisors (22202399).

51700705 is a wasteful number, since it uses less digits than its factorization.

51700705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 1225, while the sum is 25.

The square root of 51700705 is about 7190.3202293083. The cubic root of 51700705 is about 372.5336335861.

The spelling of 51700705 in words is "fifty-one million, seven hundred thousand, seven hundred five".