51801740 has 12 divisors (see below), whose sum is σ = 108783696. Its totient is φ = 20720688.

The previous prime is 51801731. The next prime is 51801767. The reversal of 51801740 is 4710815.

51801740 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 in 3 ways as a sum of consecutive naturals, for example, 1295024 + ... + 1295063.

It is an arithmetic number, because the mean of its divisors is an integer number (9065308).

Almost surely, 2^51801740 is an apocalyptic number.

It is an amenable number.

51801740 is an abundant number, since it is smaller than the sum of its proper divisors (56981956).

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

51801740 is a wasteful number, since it uses less digits than its factorization.

51801740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590096 (or 2590094 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 51801740 is about 7197.3425651417. The cubic root of 51801740 is about 372.7761476478.

The spelling of 51801740 in words is "fifty-one million, eight hundred one thousand, seven hundred forty".