51806948 has 12 divisors (see below), whose sum is σ = 94604160. Its totient is φ = 24777192.

The previous prime is 51806929. The next prime is 51806957. The reversal of 51806948 is 84960815.

It is a super-2 number, since 2×51806948² = 5367919722149408, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 281468 + ... + 281651.

It is an arithmetic number, because the mean of its divisors is an integer number (7883680).

Almost surely, 2^51806948 is an apocalyptic number.

It is an amenable number.

51806948 is a deficient number, since it is larger than the sum of its proper divisors (42797212).

51806948 is a wasteful number, since it uses less digits than its factorization.

51806948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563146 (or 563144 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 51806948 is about 7197.7043562514. The cubic root of 51806948 is about 372.7886398480.

The spelling of 51806948 in words is "fifty-one million, eight hundred six thousand, nine hundred forty-eight".