51246563 has 2 divisors, whose sum is σ = 51246564. Its totient is φ = 51246562.

The previous prime is 51246557. The next prime is 51246577. The reversal of 51246563 is 36564215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51246563 - 2¹⁰ = 51245539 is a prime.

It is not a weakly prime, because it can be changed into another prime (51246463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25623281 + 25623282.

It is an arithmetic number, because the mean of its divisors is an integer number (25623282).

Almost surely, 2^51246563 is an apocalyptic number.

51246563 is a deficient number, since it is larger than the sum of its proper divisors (1).

51246563 is an equidigital number, since it uses as much as digits as its factorization.

51246563 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 51246563 is about 7158.6704771207. The cubic root of 51246563 is about 371.4396383642.

The spelling of 51246563 in words is "fifty-one million, two hundred forty-six thousand, five hundred sixty-three".