51448457 has 2 divisors, whose sum is σ = 51448458. Its totient is φ = 51448456.

The previous prime is 51448451. The next prime is 51448469. The reversal of 51448457 is 75484415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49716601 + 1731856 = 7051^2 + 1316^2 .

It is a cyclic number.

It is not a de Polignac number, because 51448457 - 2⁶ = 51448393 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51448457.

It is not a weakly prime, because it can be changed into another prime (51448451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25724228 + 25724229.

It is an arithmetic number, because the mean of its divisors is an integer number (25724229).

Almost surely, 2^51448457 is an apocalyptic number.

It is an amenable number.

51448457 is a deficient number, since it is larger than the sum of its proper divisors (1).

51448457 is an equidigital number, since it uses as much as digits as its factorization.

51448457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 38.

The square root of 51448457 is about 7172.7579772358. The cubic root of 51448457 is about 371.9267810766.

The spelling of 51448457 in words is "fifty-one million, four hundred forty-eight thousand, four hundred fifty-seven".