51432971 has 2 divisors, whose sum is σ = 51432972. Its totient is φ = 51432970.

The previous prime is 51432961. The next prime is 51433001. The reversal of 51432971 is 17923415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51432971 - 2⁶ = 51432907 is a prime.

It is not a weakly prime, because it can be changed into another prime (51432911) 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, 25716485 + 25716486.

It is an arithmetic number, because the mean of its divisors is an integer number (25716486).

Almost surely, 2^51432971 is an apocalyptic number.

51432971 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432971 is an equidigital number, since it uses as much as digits as its factorization.

51432971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 51432971 is about 7171.6783949087. The cubic root of 51432971 is about 371.8894606433.

The spelling of 51432971 in words is "fifty-one million, four hundred thirty-two thousand, nine hundred seventy-one".