51428603 has 4 divisors (see below), whose sum is σ = 52399008. Its totient is φ = 50458200.

The previous prime is 51428593. The next prime is 51428609. The reversal of 51428603 is 30682415.

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 51428603 - 2⁶ = 51428539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51428609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485123 + ... + 485228.

It is an arithmetic number, because the mean of its divisors is an integer number (13099752).

Almost surely, 2^51428603 is an apocalyptic number.

51428603 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51428603 is a deficient number, since it is larger than the sum of its proper divisors (970405).

51428603 is an equidigital number, since it uses as much as digits as its factorization.

51428603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970404.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 51428603 is about 7171.3738572187. The cubic root of 51428603 is about 371.8789326421.

The spelling of 51428603 in words is "fifty-one million, four hundred twenty-eight thousand, six hundred three".