51320695 has 8 divisors (see below), whose sum is σ = 62747136. Its totient is φ = 40281696.

The previous prime is 51320683. The next prime is 51320699. The reversal of 51320695 is 59602315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51320695 - 2⁹ = 51320183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51320699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96567 + ... + 97096.

It is an arithmetic number, because the mean of its divisors is an integer number (7843392).

Almost surely, 2^51320695 is an apocalyptic number.

51320695 is a deficient number, since it is larger than the sum of its proper divisors (11426441).

51320695 is a wasteful number, since it uses less digits than its factorization.

51320695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193721.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 51320695 is about 7163.8463830543. The cubic root of 51320695 is about 371.6186571764.

The spelling of 51320695 in words is "fifty-one million, three hundred twenty thousand, six hundred ninety-five".