51689326 has 48 divisors (see below), whose sum is σ = 89860320. Its totient is φ = 22239360.

The previous prime is 51689321. The next prime is 51689327. The reversal of 51689326 is 62398615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51689321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474160 + ... + 474268.

It is an arithmetic number, because the mean of its divisors is an integer number (1872090).

Almost surely, 2^51689326 is an apocalyptic number.

51689326 is a deficient number, since it is larger than the sum of its proper divisors (38170994).

51689326 is a wasteful number, since it uses less digits than its factorization.

51689326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 208 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 51689326 is about 7189.5289136354. The cubic root of 51689326 is about 372.5063008108.

The spelling of 51689326 in words is "fifty-one million, six hundred eighty-nine thousand, three hundred twenty-six".