51189556 has 24 divisors (see below), whose sum is σ = 100880640. Its totient is φ = 22516800.

The previous prime is 51189529. The next prime is 51189557. The reversal of 51189556 is 65598115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51189557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17401 + ... + 20128.

It is an arithmetic number, because the mean of its divisors is an integer number (4203360).

Almost surely, 2^51189556 is an apocalyptic number.

It is an amenable number.

51189556 is a deficient number, since it is larger than the sum of its proper divisors (49691084).

51189556 is a wasteful number, since it uses less digits than its factorization.

51189556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37575 (or 37573 counting only the distinct ones).

The product of its digits is 54000, while the sum is 40.

The square root of 51189556 is about 7154.6876940926. The cubic root of 51189556 is about 371.3018566628.

The spelling of 51189556 in words is "fifty-one million, one hundred eighty-nine thousand, five hundred fifty-six".