51144556 has 6 divisors (see below), whose sum is σ = 89502980. Its totient is φ = 25572276.

The previous prime is 51144539. The next prime is 51144581. The reversal of 51144556 is 65544115.

51144556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 6393066 + ... + 6393073.

Almost surely, 2^51144556 is an apocalyptic number.

It is an amenable number.

51144556 is a deficient number, since it is larger than the sum of its proper divisors (38358424).

51144556 is a wasteful number, since it uses less digits than its factorization.

51144556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12786143 (or 12786141 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 51144556 is about 7151.5422112996. The cubic root of 51144556 is about 371.1930227304.

The spelling of 51144556 in words is "fifty-one million, one hundred forty-four thousand, five hundred fifty-six".