51443633 has 2 divisors, whose sum is σ = 51443634. Its totient is φ = 51443632.

The previous prime is 51443629. The next prime is 51443669. The reversal of 51443633 is 33634415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42876304 + 8567329 = 6548^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 51443633 - 2² = 51443629 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51443596 and 51443605.

It is not a weakly prime, because it can be changed into another prime (51443603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25721816 + 25721817.

It is an arithmetic number, because the mean of its divisors is an integer number (25721817).

Almost surely, 2^51443633 is an apocalyptic number.

It is an amenable number.

51443633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51443633 is an equidigital number, since it uses as much as digits as its factorization.

51443633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 51443633 is about 7172.4216970281. The cubic root of 51443633 is about 371.9151562973.

The spelling of 51443633 in words is "fifty-one million, four hundred forty-three thousand, six hundred thirty-three".