51747419 has 2 divisors, whose sum is σ = 51747420. Its totient is φ = 51747418.

The previous prime is 51747413. The next prime is 51747433. The reversal of 51747419 is 91474715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51747419 - 2⁴ = 51747403 is a prime.

It is a super-2 number, since 2×51747419² = 5355590746323122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51747413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25873709 + 25873710.

It is an arithmetic number, because the mean of its divisors is an integer number (25873710).

Almost surely, 2^51747419 is an apocalyptic number.

51747419 is a deficient number, since it is larger than the sum of its proper divisors (1).

51747419 is an equidigital number, since it uses as much as digits as its factorization.

51747419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 51747419 is about 7193.5678908314. The cubic root of 51747419 is about 372.6458003186.

The spelling of 51747419 in words is "fifty-one million, seven hundred forty-seven thousand, four hundred nineteen".