51316229 has 2 divisors, whose sum is σ = 51316230. Its totient is φ = 51316228.

The previous prime is 51316211. The next prime is 51316241. The reversal of 51316229 is 92261315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49350625 + 1965604 = 7025^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 51316229 - 2¹² = 51312133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51316259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658114 + 25658115.

It is an arithmetic number, because the mean of its divisors is an integer number (25658115).

Almost surely, 2^51316229 is an apocalyptic number.

It is an amenable number.

51316229 is a deficient number, since it is larger than the sum of its proper divisors (1).

51316229 is an equidigital number, since it uses as much as digits as its factorization.

51316229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 51316229 is about 7163.5346722132. The cubic root of 51316229 is about 371.6078772687.

The spelling of 51316229 in words is "fifty-one million, three hundred sixteen thousand, two hundred twenty-nine".