51396633 has 8 divisors (see below), whose sum is σ = 76143200. Its totient is φ = 34264404.

The previous prime is 51396629. The next prime is 51396637. The reversal of 51396633 is 33669315.

51396633 is a `hidden beast` number, since 5 + 13 + 9 + 6 + 633 = 666.

It is an interprime number because it is at equal distance from previous prime (51396629) and next prime (51396637).

It is not a de Polignac number, because 51396633 - 2² = 51396629 is a prime.

It is a super-2 number, since 2×51396633² = 5283227767473378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51396637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951763 + ... + 951816.

It is an arithmetic number, because the mean of its divisors is an integer number (9517900).

Almost surely, 2^51396633 is an apocalyptic number.

It is an amenable number.

51396633 is a deficient number, since it is larger than the sum of its proper divisors (24746567).

51396633 is a wasteful number, since it uses less digits than its factorization.

51396633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903588 (or 1903582 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 51396633 is about 7169.1445096329. The cubic root of 51396633 is about 371.8018585809.

The spelling of 51396633 in words is "fifty-one million, three hundred ninety-six thousand, six hundred thirty-three".