51729386 has 8 divisors (see below), whose sum is σ = 78205440. Its totient is φ = 25660908.

The previous prime is 51729383. The next prime is 51729397. The reversal of 51729386 is 68392715.

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

It is not an unprimeable number, because it can be changed into a prime (51729383) 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, 101576 + ... + 102083.

It is an arithmetic number, because the mean of its divisors is an integer number (9775680).

Almost surely, 2^51729386 is an apocalyptic number.

51729386 is a deficient number, since it is larger than the sum of its proper divisors (26476054).

51729386 is a wasteful number, since it uses less digits than its factorization.

51729386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203788.

The product of its digits is 90720, while the sum is 41.

The square root of 51729386 is about 7192.3143702149. The cubic root of 51729386 is about 372.6025086106.

The spelling of 51729386 in words is "fifty-one million, seven hundred twenty-nine thousand, three hundred eighty-six".