51362231 has 2 divisors, whose sum is σ = 51362232. Its totient is φ = 51362230.

The previous prime is 51362209. The next prime is 51362239. The reversal of 51362231 is 13226315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51362231 is a prime.

It is a super-2 number, since 2×51362231² = 5276157546594722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51362197 and 51362206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51362239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25681115 + 25681116.

It is an arithmetic number, because the mean of its divisors is an integer number (25681116).

Almost surely, 2^51362231 is an apocalyptic number.

51362231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51362231 is an equidigital number, since it uses as much as digits as its factorization.

51362231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 51362231 is about 7166.7447980237. The cubic root of 51362231 is about 371.7188856853.

Adding to 51362231 its reverse (13226315), we get a palindrome (64588546).

The spelling of 51362231 in words is "fifty-one million, three hundred sixty-two thousand, two hundred thirty-one".