51724633 has 2 divisors, whose sum is σ = 51724634. Its totient is φ = 51724632.

The previous prime is 51724609. The next prime is 51724637. The reversal of 51724633 is 33642715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 25836889 = 5088^2 + 5083^2 .

It is a cyclic number.

It is not a de Polignac number, because 51724633 - 2⁵ = 51724601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51724595 and 51724604.

It is not a weakly prime, because it can be changed into another prime (51724637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25862316 + 25862317.

It is an arithmetic number, because the mean of its divisors is an integer number (25862317).

Almost surely, 2^51724633 is an apocalyptic number.

It is an amenable number.

51724633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51724633 is an equidigital number, since it uses as much as digits as its factorization.

51724633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 51724633 is about 7191.9839404715. The cubic root of 51724633 is about 372.5910964385.

The spelling of 51724633 in words is "fifty-one million, seven hundred twenty-four thousand, six hundred thirty-three".