51655488 has 28 divisors (see below), whose sum is σ = 136672320. Its totient is φ = 17218432.

The previous prime is 51655481. The next prime is 51655489. The reversal of 51655488 is 88455615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134328 + ... + 134711.

Almost surely, 2^51655488 is an apocalyptic number.

It is an amenable number.

51655488 is an abundant number, since it is smaller than the sum of its proper divisors (85016832).

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

51655488 is a wasteful number, since it uses less digits than its factorization.

51655488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269054 (or 269044 counting only the distinct ones).

The product of its digits is 192000, while the sum is 42.

The square root of 51655488 is about 7187.1752448372. The cubic root of 51655488 is about 372.4249969857.

The spelling of 51655488 in words is "fifty-one million, six hundred fifty-five thousand, four hundred eighty-eight".