51655008 has 24 divisors (see below), whose sum is σ = 135594648. Its totient is φ = 17218304.

The previous prime is 51655007. The next prime is 51655013. The reversal of 51655008 is 80055615.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655001) 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, 268941 + ... + 269132.

It is an arithmetic number, because the mean of its divisors is an integer number (5649777).

Almost surely, 2^51655008 is an apocalyptic number.

It is an amenable number.

51655008 is an abundant number, since it is smaller than the sum of its proper divisors (83939640).

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

51655008 is a wasteful number, since it uses less digits than its factorization.

51655008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538086 (or 538078 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 51655008 is about 7187.1418519464. The cubic root of 51655008 is about 372.4238434164.

The spelling of 51655008 in words is "fifty-one million, six hundred fifty-five thousand, eight".