51986293 has 8 divisors (see below), whose sum is σ = 52865600. Its totient is φ = 51111648.

The previous prime is 51986281. The next prime is 51986309. The reversal of 51986293 is 39268915.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51986293 - 2²¹ = 49889141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51986203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26728 + ... + 28606.

It is an arithmetic number, because the mean of its divisors is an integer number (6608200).

Almost surely, 2^51986293 is an apocalyptic number.

It is an amenable number.

51986293 is a deficient number, since it is larger than the sum of its proper divisors (879307).

51986293 is a wasteful number, since it uses less digits than its factorization.

51986293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331.

The product of its digits is 116640, while the sum is 43.

The square root of 51986293 is about 7210.1520788399. The cubic root of 51986293 is about 373.2183169468.

The spelling of 51986293 in words is "fifty-one million, nine hundred eighty-six thousand, two hundred ninety-three".