51424897 has 2 divisors, whose sum is σ = 51424898. Its totient is φ = 51424896.

The previous prime is 51424889. The next prime is 51424903. The reversal of 51424897 is 79842415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45684081 + 5740816 = 6759^2 + 2396^2 .

It is a cyclic number.

It is not a de Polignac number, because 51424897 - 2³ = 51424889 is a prime.

It is not a weakly prime, because it can be changed into another prime (51424837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712448 + 25712449.

It is an arithmetic number, because the mean of its divisors is an integer number (25712449).

Almost surely, 2^51424897 is an apocalyptic number.

It is an amenable number.

51424897 is a deficient number, since it is larger than the sum of its proper divisors (1).

51424897 is an equidigital number, since it uses as much as digits as its factorization.

51424897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 51424897 is about 7171.1154641381. The cubic root of 51424897 is about 371.8699997633.

The spelling of 51424897 in words is "fifty-one million, four hundred twenty-four thousand, eight hundred ninety-seven".