51893236 has 6 divisors (see below), whose sum is σ = 90813170. Its totient is φ = 25946616.

The previous prime is 51893189. The next prime is 51893239. The reversal of 51893236 is 63239815.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 197136 = 7190^2 + 444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51893195 and 51893204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51893239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6486651 + ... + 6486658.

Almost surely, 2^51893236 is an apocalyptic number.

It is an amenable number.

51893236 is a deficient number, since it is larger than the sum of its proper divisors (38919934).

51893236 is a wasteful number, since it uses less digits than its factorization.

51893236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12973313 (or 12973311 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 51893236 is about 7203.6959958066. The cubic root of 51893236 is about 372.9954933366.

The spelling of 51893236 in words is "fifty-one million, eight hundred ninety-three thousand, two hundred thirty-six".