51851336 has 8 divisors (see below), whose sum is σ = 97221270. Its totient is φ = 25925664.

The previous prime is 51851299. The next prime is 51851339. The reversal of 51851336 is 63315815.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 155236 = 7190^2 + 394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51851336² = 5377122089969792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51851339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240701 + ... + 3240716.

Almost surely, 2^51851336 is an apocalyptic number.

It is an amenable number.

51851336 is a deficient number, since it is larger than the sum of its proper divisors (45369934).

51851336 is a wasteful number, since it uses less digits than its factorization.

51851336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481423 (or 6481419 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 51851336 is about 7200.7871791909. The cubic root of 51851336 is about 372.8950774278.

The spelling of 51851336 in words is "fifty-one million, eight hundred fifty-one thousand, three hundred thirty-six".