51174940 has 12 divisors (see below), whose sum is σ = 107467416. Its totient is φ = 20469968.

The previous prime is 51174901. The next prime is 51174941. The reversal of 51174940 is 4947115.

51174940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51174941) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1279354 + ... + 1279393.

It is an arithmetic number, because the mean of its divisors is an integer number (8955618).

Almost surely, 2^51174940 is an apocalyptic number.

It is an amenable number.

51174940 is an abundant number, since it is smaller than the sum of its proper divisors (56292476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51174940 is a wasteful number, since it uses less digits than its factorization.

51174940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558756 (or 2558754 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51174940 is about 7153.6661929391. Note that the first 3 decimals coincide. The cubic root of 51174940 is about 371.2665143980.

The spelling of 51174940 in words is "fifty-one million, one hundred seventy-four thousand, nine hundred forty".