51676681 has 8 divisors (see below), whose sum is σ = 59525120. Its totient is φ = 43944768.

The previous prime is 51676673. The next prime is 51676727. The reversal of 51676681 is 18667615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51676681 - 2³ = 51676673 is a prime.

It is a super-2 number, since 2×51676681² = 5340958718351522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51676621) 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, 28176 + ... + 29953.

It is an arithmetic number, because the mean of its divisors is an integer number (7440640).

Almost surely, 2^51676681 is an apocalyptic number.

It is an amenable number.

51676681 is a deficient number, since it is larger than the sum of its proper divisors (7848439).

51676681 is a wasteful number, since it uses less digits than its factorization.

51676681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58263.

The product of its digits is 60480, while the sum is 40.

The square root of 51676681 is about 7188.6494559131. The cubic root of 51676681 is about 372.4759223510.

The spelling of 51676681 in words is "fifty-one million, six hundred seventy-six thousand, six hundred eighty-one".