51460231 has 2 divisors, whose sum is σ = 51460232. Its totient is φ = 51460230.

The previous prime is 51460183. The next prime is 51460243. The reversal of 51460231 is 13206415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51460231 - 2¹⁹ = 50935943 is a prime.

It is a super-2 number, since 2×51460231² = 5296310749146722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51461231) 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, 25730115 + 25730116.

It is an arithmetic number, because the mean of its divisors is an integer number (25730116).

Almost surely, 2^51460231 is an apocalyptic number.

51460231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51460231 is an equidigital number, since it uses as much as digits as its factorization.

51460231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51460231 is about 7173.5786745529. The cubic root of 51460231 is about 371.9551507768.

Adding to 51460231 its reverse (13206415), we get a palindrome (64666646).

The spelling of 51460231 in words is "fifty-one million, four hundred sixty thousand, two hundred thirty-one".