51330633 has 16 divisors (see below), whose sum is σ = 72648000. Its totient is φ = 32126976.

The previous prime is 51330619. The next prime is 51330683. The reversal of 51330633 is 33603315.

It is not a de Polignac number, because 51330633 - 2²² = 47136329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51330683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24441 + ... + 26457.

It is an arithmetic number, because the mean of its divisors is an integer number (4540500).

Almost surely, 2^51330633 is an apocalyptic number.

It is an amenable number.

51330633 is a deficient number, since it is larger than the sum of its proper divisors (21317367).

51330633 is a wasteful number, since it uses less digits than its factorization.

51330633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 2430, while the sum is 24.

The square root of 51330633 is about 7164.5399712752. The cubic root of 51330633 is about 371.6426430029.

Adding to 51330633 its reverse (33603315), we get a palindrome (84933948).

The spelling of 51330633 in words is "fifty-one million, three hundred thirty thousand, six hundred thirty-three".