51603463 has 4 divisors (see below), whose sum is σ = 51672928. Its totient is φ = 51534000.

The previous prime is 51603451. The next prime is 51603469. The reversal of 51603463 is 36430615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51603463 - 2⁹ = 51602951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51603469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33606 + ... + 35107.

It is an arithmetic number, because the mean of its divisors is an integer number (12918232).

Almost surely, 2^51603463 is an apocalyptic number.

51603463 is a deficient number, since it is larger than the sum of its proper divisors (69465).

51603463 is an equidigital number, since it uses as much as digits as its factorization.

51603463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69464.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 51603463 is about 7183.5550391154. Note that the first 3 decimals coincide. The cubic root of 51603463 is about 372.2999252877.

The spelling of 51603463 in words is "fifty-one million, six hundred three thousand, four hundred sixty-three".