51431459 has 2 divisors, whose sum is σ = 51431460. Its totient is φ = 51431458.

The previous prime is 51431453. The next prime is 51431467. The reversal of 51431459 is 95413415.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51431459 is a prime.

It is not a weakly prime, because it can be changed into another prime (51431453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715729 + 25715730.

It is an arithmetic number, because the mean of its divisors is an integer number (25715730).

Almost surely, 2^51431459 is an apocalyptic number.

51431459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431459 is an equidigital number, since it uses as much as digits as its factorization.

51431459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 51431459 is about 7171.5729794795. The cubic root of 51431459 is about 371.8858164027.

The spelling of 51431459 in words is "fifty-one million, four hundred thirty-one thousand, four hundred fifty-nine".