51036506 has 4 divisors (see below), whose sum is σ = 76554762. Its totient is φ = 25518252.

The previous prime is 51036497. The next prime is 51036529. The reversal of 51036506 is 60563015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60563015 = 5 ⋅12112603.

It can be written as a sum of positive squares in only one way, i.e., 34916281 + 16120225 = 5909^2 + 4015^2 .

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 as a sum of consecutive naturals, namely, 12759125 + ... + 12759128.

Almost surely, 2^51036506 is an apocalyptic number.

51036506 is a deficient number, since it is larger than the sum of its proper divisors (25518256).

51036506 is a wasteful number, since it uses less digits than its factorization.

51036506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25518255.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 51036506 is about 7143.9839025575. The cubic root of 51036506 is about 370.9314394418.

The spelling of 51036506 in words is "fifty-one million, thirty-six thousand, five hundred six".