51392684 has 12 divisors (see below), whose sum is σ = 102785424. Its totient is φ = 22025424.

The previous prime is 51392681. The next prime is 51392689. The reversal of 51392684 is 48629315.

It is a happy number.

51392684 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51392681) 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, 917699 + ... + 917754.

It is an arithmetic number, because the mean of its divisors is an integer number (8565452).

Almost surely, 2^51392684 is an apocalyptic number.

It is an amenable number.

51392684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51392684 is a wasteful number, since it uses less digits than its factorization.

51392684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835464 (or 1835462 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 51392684 is about 7168.8690879385. The cubic root of 51392684 is about 371.7923360172.

The spelling of 51392684 in words is "fifty-one million, three hundred ninety-two thousand, six hundred eighty-four".