51019103 has 4 divisors (see below), whose sum is σ = 51046008. Its totient is φ = 50992200.

The previous prime is 51019081. The next prime is 51019151. The reversal of 51019103 is 30191015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30191015 = 5 ⋅6038203.

It is a cyclic number.

It is not a de Polignac number, because 51019103 - 2¹² = 51015007 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 (51019153) 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, 10373 + ... + 14478.

It is an arithmetic number, because the mean of its divisors is an integer number (12761502).

Almost surely, 2^51019103 is an apocalyptic number.

51019103 is a deficient number, since it is larger than the sum of its proper divisors (26905).

51019103 is a wasteful number, since it uses less digits than its factorization.

51019103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26904.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 51019103 is about 7142.7657808443. The cubic root of 51019103 is about 370.8892731950.

The spelling of 51019103 in words is "fifty-one million, nineteen thousand, one hundred three".