51071203 has 4 divisors (see below), whose sum is σ = 51176560. Its totient is φ = 50965848.

The previous prime is 51071197. The next prime is 51071227. The reversal of 51071203 is 30217015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30217015 = 5 ⋅6043403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51071203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51071263) 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, 51948 + ... + 52921.

It is an arithmetic number, because the mean of its divisors is an integer number (12794140).

Almost surely, 2^51071203 is an apocalyptic number.

51071203 is a deficient number, since it is larger than the sum of its proper divisors (105357).

51071203 is a wasteful number, since it uses less digits than its factorization.

51071203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105356.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 51071203 is about 7146.4118968892. The cubic root of 51071203 is about 371.0154792378.

Adding to 51071203 its reverse (30217015), we get a palindrome (81288218).

The spelling of 51071203 in words is "fifty-one million, seventy-one thousand, two hundred three".