51227009293 has 2 divisors, whose sum is σ = 51227009294. Its totient is φ = 51227009292.

The previous prime is 51227009227. The next prime is 51227009303. The reversal of 51227009293 is 39290072215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26915027364 + 24311981929 = 164058^2 + 155923^2 .

It is a cyclic number.

It is not a de Polignac number, because 51227009293 - 2¹⁷ = 51226878221 is a prime.

It is a super-2 number, since 2×51227009293² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51227009213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25613504646 + 25613504647.

It is an arithmetic number, because the mean of its divisors is an integer number (25613504647).

Almost surely, 2^51227009293 is an apocalyptic number.

It is an amenable number.

51227009293 is a deficient number, since it is larger than the sum of its proper divisors (1).

51227009293 is an equidigital number, since it uses as much as digits as its factorization.

51227009293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 51227009293 in words is "fifty-one billion, two hundred twenty-seven million, nine thousand, two hundred ninety-three".