51095690 has 8 divisors (see below), whose sum is σ = 91972260. Its totient is φ = 20438272.

The previous prime is 51095689. The next prime is 51095749. The reversal of 51095690 is 9659015.

It can be written as a sum of positive squares in 2 ways, for example, as 46689889 + 4405801 = 6833^2 + 2099^2 .

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

It is a super-2 number, since 2×51095690² = 5221539073152200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51095690.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2554775 + ... + 2554794.

Almost surely, 2^51095690 is an apocalyptic number.

51095690 is a deficient number, since it is larger than the sum of its proper divisors (40876570).

51095690 is a wasteful number, since it uses less digits than its factorization.

51095690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109576.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 51095690 is about 7148.1249289586. The cubic root of 51095690 is about 371.0747664283.

The spelling of 51095690 in words is "fifty-one million, ninety-five thousand, six hundred ninety".