51042263 has 2 divisors, whose sum is σ = 51042264. Its totient is φ = 51042262.

The previous prime is 51042241. The next prime is 51042281. The reversal of 51042263 is 36224015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51042263 - 2¹² = 51038167 is a prime.

It is a super-2 number, since 2×51042263² = 5210625224322338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51042223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521131 + 25521132.

It is an arithmetic number, because the mean of its divisors is an integer number (25521132).

Almost surely, 2^51042263 is an apocalyptic number.

51042263 is a deficient number, since it is larger than the sum of its proper divisors (1).

51042263 is an equidigital number, since it uses as much as digits as its factorization.

51042263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51042263 is about 7144.3868176352. The cubic root of 51042263 is about 370.9453861384.

Adding to 51042263 its reverse (36224015), we get a palindrome (87266278).

The spelling of 51042263 in words is "fifty-one million, forty-two thousand, two hundred sixty-three".