51432319 has 2 divisors, whose sum is σ = 51432320. Its totient is φ = 51432318.

The previous prime is 51432281. The next prime is 51432323. The reversal of 51432319 is 91323415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51432319 - 2¹⁹ = 50908031 is a prime.

It is a super-2 number, since 2×51432319² = 5290566875435522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51430319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716159 + 25716160.

It is an arithmetic number, because the mean of its divisors is an integer number (25716160).

Almost surely, 2^51432319 is an apocalyptic number.

51432319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432319 is an equidigital number, since it uses as much as digits as its factorization.

51432319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 51432319 is about 7171.6329381808. The cubic root of 51432319 is about 371.8878891938.

The spelling of 51432319 in words is "fifty-one million, four hundred thirty-two thousand, three hundred nineteen".