51461233 has 2 divisors, whose sum is σ = 51461234. Its totient is φ = 51461232.

The previous prime is 51461231. The next prime is 51461309. The reversal of 51461233 is 33216415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40551424 + 10909809 = 6368^2 + 3303^2 .

It is a cyclic number.

It is not a de Polignac number, because 51461233 - 2¹ = 51461231 is a prime.

Together with 51461231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51461198 and 51461207.

It is not a weakly prime, because it can be changed into another prime (51461231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25730616 + 25730617.

It is an arithmetic number, because the mean of its divisors is an integer number (25730617).

Almost surely, 2^51461233 is an apocalyptic number.

It is an amenable number.

51461233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51461233 is an equidigital number, since it uses as much as digits as its factorization.

51461233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 51461233 is about 7173.6485138317. The cubic root of 51461233 is about 371.9575649171.

Adding to 51461233 its reverse (33216415), we get a palindrome (84677648).

The spelling of 51461233 in words is "fifty-one million, four hundred sixty-one thousand, two hundred thirty-three".