51254663 has 2 divisors, whose sum is σ = 51254664. Its totient is φ = 51254662.

The previous prime is 51254611. The next prime is 51254669. The reversal of 51254663 is 36645215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51254663 - 2⁸ = 51254407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51254669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25627331 + 25627332.

It is an arithmetic number, because the mean of its divisors is an integer number (25627332).

Almost surely, 2^51254663 is an apocalyptic number.

51254663 is a deficient number, since it is larger than the sum of its proper divisors (1).

51254663 is an equidigital number, since it uses as much as digits as its factorization.

51254663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 51254663 is about 7159.2362022774. The cubic root of 51254663 is about 371.4592071730.

Adding to 51254663 its reverse (36645215), we get a palindrome (87899878).

The spelling of 51254663 in words is "fifty-one million, two hundred fifty-four thousand, six hundred sixty-three".