51696684 has 48 divisors (see below), whose sum is σ = 144342240. Its totient is φ = 15906240.

The previous prime is 51696683. The next prime is 51696691. The reversal of 51696684 is 48669615.

It is not an unprimeable number, because it can be changed into a prime (51696683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17007 + ... + 19814.

It is an arithmetic number, because the mean of its divisors is an integer number (3007130).

Almost surely, 2^51696684 is an apocalyptic number.

51696684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51696684 is an abundant number, since it is smaller than the sum of its proper divisors (92645556).

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

51696684 is a wasteful number, since it uses less digits than its factorization.

51696684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36847 (or 36839 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 51696684 is about 7190.0406118464. The cubic root of 51696684 is about 372.5239754549.

The spelling of 51696684 in words is "fifty-one million, six hundred ninety-six thousand, six hundred eighty-four".