51807628 has 6 divisors (see below), whose sum is σ = 90663356. Its totient is φ = 25903812.

The previous prime is 51807617. The next prime is 51807629. The reversal of 51807628 is 82670815.

It is not an unprimeable number, because it can be changed into a prime (51807629) 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 as a sum of consecutive naturals, namely, 6475950 + ... + 6475957.

Almost surely, 2^51807628 is an apocalyptic number.

It is an amenable number.

51807628 is a deficient number, since it is larger than the sum of its proper divisors (38855728).

51807628 is a wasteful number, since it uses less digits than its factorization.

51807628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12951911 (or 12951909 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 51807628 is about 7197.7515933797. The cubic root of 51807628 is about 372.7902708722.

The spelling of 51807628 in words is "fifty-one million, eight hundred seven thousand, six hundred twenty-eight".