51405337 has 2 divisors, whose sum is σ = 51405338. Its totient is φ = 51405336.

The previous prime is 51405271. The next prime is 51405353. The reversal of 51405337 is 73350415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47734281 + 3671056 = 6909^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 51405337 - 2¹⁹ = 50881049 is a prime.

It is not a weakly prime, because it can be changed into another prime (51406337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25702668 + 25702669.

It is an arithmetic number, because the mean of its divisors is an integer number (25702669).

Almost surely, 2^51405337 is an apocalyptic number.

It is an amenable number.

51405337 is a deficient number, since it is larger than the sum of its proper divisors (1).

51405337 is an equidigital number, since it uses as much as digits as its factorization.

51405337 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 51405337 is about 7169.7515298649. The cubic root of 51405337 is about 371.8228455634.

The spelling of 51405337 in words is "fifty-one million, four hundred five thousand, three hundred thirty-seven".