51432629 has 2 divisors, whose sum is σ = 51432630. Its totient is φ = 51432628.

The previous prime is 51432581. The next prime is 51432637. The reversal of 51432629 is 92623415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30547729 + 20884900 = 5527^2 + 4570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51432629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51432595 and 51432604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51432659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716314 + 25716315.

It is an arithmetic number, because the mean of its divisors is an integer number (25716315).

Almost surely, 2^51432629 is an apocalyptic number.

It is an amenable number.

51432629 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432629 is an equidigital number, since it uses as much as digits as its factorization.

51432629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 51432629 is about 7171.6545510782. The cubic root of 51432629 is about 371.8886363571. Note that the first 3 decimals are identical.

The spelling of 51432629 in words is "fifty-one million, four hundred thirty-two thousand, six hundred twenty-nine".