51206695 has 8 divisors (see below), whose sum is σ = 61490736. Its totient is φ = 40936896.

The previous prime is 51206629. The next prime is 51206707. The reversal of 51206695 is 59660215.

It is a happy number.

51206695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51206695 - 2¹³ = 51198503 is a prime.

It is a super-2 number, since 2×51206695² = 5244251225646050, which contains 22 as substring.

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 51206695.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7459 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (7686342).

Almost surely, 2^51206695 is an apocalyptic number.

51206695 is a deficient number, since it is larger than the sum of its proper divisors (10284041).

51206695 is a wasteful number, since it uses less digits than its factorization.

51206695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 51206695 is about 7155.8853400540. The cubic root of 51206695 is about 371.3432911072.

The spelling of 51206695 in words is "fifty-one million, two hundred six thousand, six hundred ninety-five".