51655683 has 4 divisors (see below), whose sum is σ = 68874248. Its totient is φ = 34437120.

The previous prime is 51655657. The next prime is 51655687. The reversal of 51655683 is 38655615.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-51655683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51655687) 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, 8609278 + ... + 8609283.

It is an arithmetic number, because the mean of its divisors is an integer number (17218562).

Almost surely, 2^51655683 is an apocalyptic number.

51655683 is a deficient number, since it is larger than the sum of its proper divisors (17218565).

51655683 is a wasteful number, since it uses less digits than its factorization.

51655683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218564.

The product of its digits is 108000, while the sum is 39.

The square root of 51655683 is about 7187.1888106547. The cubic root of 51655683 is about 372.4254656211.

The spelling of 51655683 in words is "fifty-one million, six hundred fifty-five thousand, six hundred eighty-three".