51750540 has 36 divisors (see below), whose sum is σ = 156977184. Its totient is φ = 13800096.

The previous prime is 51750469. The next prime is 51750581. The reversal of 51750540 is 4505715.

51750540 is a `hidden beast` number, since 51 + 75 + 0 + 540 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143572 + ... + 143931.

Almost surely, 2^51750540 is an apocalyptic number.

It is an amenable number.

51750540 is an abundant number, since it is smaller than the sum of its proper divisors (105226644).

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

51750540 is a wasteful number, since it uses less digits than its factorization.

51750540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287518 (or 287513 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 51750540 is about 7193.7848174657. The cubic root of 51750540 is about 372.6532918624.

The spelling of 51750540 in words is "fifty-one million, seven hundred fifty thousand, five hundred forty".