51423049 has 2 divisors, whose sum is σ = 51423050. Its totient is φ = 51423048.

The previous prime is 51422999. The next prime is 51423067. The reversal of 51423049 is 94032415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49449024 + 1974025 = 7032^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 51423049 - 2¹¹ = 51421001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51423349) 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, 25711524 + 25711525.

It is an arithmetic number, because the mean of its divisors is an integer number (25711525).

Almost surely, 2^51423049 is an apocalyptic number.

It is an amenable number.

51423049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423049 is an equidigital number, since it uses as much as digits as its factorization.

51423049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 51423049 is about 7170.9866127333. The cubic root of 51423049 is about 371.8655452154.

The spelling of 51423049 in words is "fifty-one million, four hundred twenty-three thousand, forty-nine".