51887568 has 40 divisors (see below), whose sum is σ = 134866368. Its totient is φ = 17189632.

The previous prime is 51887567. The next prime is 51887569. The reversal of 51887568 is 86578815.

It is an interprime number because it is at equal distance from previous prime (51887567) and next prime (51887569).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4780 + ... + 11252.

Almost surely, 2^51887568 is an apocalyptic number.

It is an amenable number.

51887568 is an abundant number, since it is smaller than the sum of its proper divisors (82978800).

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

51887568 is a wasteful number, since it uses less digits than its factorization.

51887568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651 (or 6645 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The square root of 51887568 is about 7203.3025759023. The cubic root of 51887568 is about 372.9819127906.

The spelling of 51887568 in words is "fifty-one million, eight hundred eighty-seven thousand, five hundred sixty-eight".