51002563 has 2 divisors, whose sum is σ = 51002564. Its totient is φ = 51002562.

The previous prime is 51002557. The next prime is 51002597. The reversal of 51002563 is 36520015.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51002563 - 2⁵ = 51002531 is a prime.

It is a super-2 number, since 2×51002563² = 5202522865137938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51402563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25501281 + 25501282.

It is an arithmetic number, because the mean of its divisors is an integer number (25501282).

Almost surely, 2^51002563 is an apocalyptic number.

51002563 is a deficient number, since it is larger than the sum of its proper divisors (1).

51002563 is an equidigital number, since it uses as much as digits as its factorization.

51002563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51002563 is about 7141.6078721812. The cubic root of 51002563 is about 370.8491890484.

Adding to 51002563 its reverse (36520015), we get a palindrome (87522578).

The spelling of 51002563 in words is "fifty-one million, two thousand, five hundred sixty-three".