51303457 has 2 divisors, whose sum is σ = 51303458. Its totient is φ = 51303456.

The previous prime is 51303383. The next prime is 51303479. The reversal of 51303457 is 75430315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36372961 + 14930496 = 6031^2 + 3864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51303457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51303487) 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, 25651728 + 25651729.

It is an arithmetic number, because the mean of its divisors is an integer number (25651729).

Almost surely, 2^51303457 is an apocalyptic number.

It is an amenable number.

51303457 is a deficient number, since it is larger than the sum of its proper divisors (1).

51303457 is an equidigital number, since it uses as much as digits as its factorization.

51303457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 51303457 is about 7162.6431573826. The cubic root of 51303457 is about 371.5770451148.

The spelling of 51303457 in words is "fifty-one million, three hundred three thousand, four hundred fifty-seven".