51603201 has 12 divisors (see below), whose sum is σ = 80271828. Its totient is φ = 31755744.

The previous prime is 51603173. The next prime is 51603239. The reversal of 51603201 is 10230615.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 19793601 = 5640^2 + 4449^2 .

It is not a de Polignac number, because 51603201 - 2⁵ = 51603169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51603241) 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 11 ways as a sum of consecutive naturals, for example, 220410 + ... + 220643.

It is an arithmetic number, because the mean of its divisors is an integer number (6689319).

Almost surely, 2^51603201 is an apocalyptic number.

It is an amenable number.

51603201 is a deficient number, since it is larger than the sum of its proper divisors (28668627).

51603201 is a wasteful number, since it uses less digits than its factorization.

51603201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441072 (or 441069 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51603201 is about 7183.5368029961. The cubic root of 51603201 is about 372.2992952089.

Adding to 51603201 its reverse (10230615), we get a palindrome (61833816).

The spelling of 51603201 in words is "fifty-one million, six hundred three thousand, two hundred one".