51986134 has 4 divisors (see below), whose sum is σ = 77979204. Its totient is φ = 25993066.

The previous prime is 51986131. The next prime is 51986149. The reversal of 51986134 is 43168915.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51986093 and 51986102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51986131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12996532 + ... + 12996535.

It is an arithmetic number, because the mean of its divisors is an integer number (19494801).

Almost surely, 2^51986134 is an apocalyptic number.

51986134 is a deficient number, since it is larger than the sum of its proper divisors (25993070).

51986134 is a wasteful number, since it uses less digits than its factorization.

51986134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25993069.

The product of its digits is 25920, while the sum is 37.

The square root of 51986134 is about 7210.1410527118. The cubic root of 51986134 is about 373.2179364506.

The spelling of 51986134 in words is "fifty-one million, nine hundred eighty-six thousand, one hundred thirty-four".