51227893 has 2 divisors, whose sum is σ = 51227894. Its totient is φ = 51227892.

The previous prime is 51227879. The next prime is 51227899. The reversal of 51227893 is 39872215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41254929 + 9972964 = 6423^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 51227893 - 2⁹ = 51227381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51227899) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25613946 + 25613947.

It is an arithmetic number, because the mean of its divisors is an integer number (25613947).

Almost surely, 2^51227893 is an apocalyptic number.

It is an amenable number.

51227893 is a deficient number, since it is larger than the sum of its proper divisors (1).

51227893 is an equidigital number, since it uses as much as digits as its factorization.

51227893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 51227893 is about 7157.3663452418. The cubic root of 51227893 is about 371.3945256128.

The spelling of 51227893 in words is "fifty-one million, two hundred twenty-seven thousand, eight hundred ninety-three".