51547459 has 2 divisors, whose sum is σ = 51547460. Its totient is φ = 51547458.

The previous prime is 51547369. The next prime is 51547469. The reversal of 51547459 is 95474515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51547459 - 2¹⁵ = 51514691 is a prime.

It is not a weakly prime, because it can be changed into another prime (51547469) 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, 25773729 + 25773730.

It is an arithmetic number, because the mean of its divisors is an integer number (25773730).

Almost surely, 2^51547459 is an apocalyptic number.

51547459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51547459 is an equidigital number, since it uses as much as digits as its factorization.

51547459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 40.

The square root of 51547459 is about 7179.6559109751. The cubic root of 51547459 is about 372.1651938109.

It can be divided in two parts, 515 and 47459, that added together give a palindrome (47974).

The spelling of 51547459 in words is "fifty-one million, five hundred forty-seven thousand, four hundred fifty-nine".