51044636 has 12 divisors (see below), whose sum is σ = 93212112. Its totient is φ = 24412608.

The previous prime is 51044629. The next prime is 51044639. The reversal of 51044636 is 63644015.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51044599 and 51044608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51044639) by changing a digit.

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, 277325 + ... + 277508.

It is an arithmetic number, because the mean of its divisors is an integer number (7767676).

Almost surely, 2^51044636 is an apocalyptic number.

It is an amenable number.

51044636 is a deficient number, since it is larger than the sum of its proper divisors (42167476).

51044636 is a wasteful number, since it uses less digits than its factorization.

51044636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554860 (or 554858 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 51044636 is about 7144.5528901395. The cubic root of 51044636 is about 370.9511345758.

The spelling of 51044636 in words is "fifty-one million, forty-four thousand, six hundred thirty-six".