51534563 has 2 divisors, whose sum is σ = 51534564. Its totient is φ = 51534562.

The previous prime is 51534551. The next prime is 51534611. The reversal of 51534563 is 36543515.

51534563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51534563 - 2⁴ = 51534547 is a prime.

It is a super-2 number, since 2×51534563² = 5311622367201938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51534503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767281 + 25767282.

It is an arithmetic number, because the mean of its divisors is an integer number (25767282).

Almost surely, 2^51534563 is an apocalyptic number.

51534563 is a deficient number, since it is larger than the sum of its proper divisors (1).

51534563 is an equidigital number, since it uses as much as digits as its factorization.

51534563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 51534563 is about 7178.7577616186. The cubic root of 51534563 is about 372.1341554712.

The spelling of 51534563 in words is "fifty-one million, five hundred thirty-four thousand, five hundred sixty-three".