51030103 has 4 divisors (see below), whose sum is σ = 51895080. Its totient is φ = 50165128.

The previous prime is 51030101. The next prime is 51030137. The reversal of 51030103 is 30103015.

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 51030103 - 2¹ = 51030101 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 (51030101) 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, 432400 + ... + 432517.

It is an arithmetic number, because the mean of its divisors is an integer number (12973770).

Almost surely, 2^51030103 is an apocalyptic number.

51030103 is a deficient number, since it is larger than the sum of its proper divisors (864977).

51030103 is an equidigital number, since it uses as much as digits as its factorization.

51030103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864976.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 51030103 is about 7143.5357491931. The cubic root of 51030103 is about 370.9159265372.

Adding to 51030103 its reverse (30103015), we get a palindrome (81133118).

It can be divided in two parts, 5 and 1030103, that multiplied together give a palindrome (5150515).

The spelling of 51030103 in words is "fifty-one million, thirty thousand, one hundred three".