51053940 has 72 divisors (see below), whose sum is σ = 176991360. Its totient is φ = 11669184.

The previous prime is 51053927. The next prime is 51053963. The reversal of 51053940 is 4935015.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 19000 + ... + 21519.

Almost surely, 2^51053940 is an apocalyptic number.

It is an amenable number.

51053940 is an abundant number, since it is smaller than the sum of its proper divisors (125937420).

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

51053940 is a wasteful number, since it uses less digits than its factorization.

51053940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40541 (or 40536 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51053940 is about 7145.2039858915. The cubic root of 51053940 is about 370.9736711893.

Adding to 51053940 its reverse (4935015), we get a palindrome (55988955).

It can be divided in two parts, 5105 and 3940, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 51053940 in words is "fifty-one million, fifty-three thousand, nine hundred forty".