51652540 has 12 divisors (see below), whose sum is σ = 108470376. Its totient is φ = 20661008.

The previous prime is 51652499. The next prime is 51652547. The reversal of 51652540 is 4525615.

51652540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51652499 and 51652508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51652547) 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, 1291294 + ... + 1291333.

It is an arithmetic number, because the mean of its divisors is an integer number (9039198).

Almost surely, 2^51652540 is an apocalyptic number.

It is an amenable number.

51652540 is an abundant number, since it is smaller than the sum of its proper divisors (56817836).

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

51652540 is a wasteful number, since it uses less digits than its factorization.

51652540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582636 (or 2582634 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 51652540 is about 7186.9701543836. The cubic root of 51652540 is about 372.4179120348.

The spelling of 51652540 in words is "fifty-one million, six hundred fifty-two thousand, five hundred forty".