51103043 has 4 divisors (see below), whose sum is σ = 51158520. Its totient is φ = 51047568.

The previous prime is 51102983. The next prime is 51103057. The reversal of 51103043 is 34030115.

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 51103043 - 2⁶ = 51102979 is a prime.

It is a super-2 number, since 2×51103043² = 5223042007719698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51103243) 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, 26333 + ... + 28206.

It is an arithmetic number, because the mean of its divisors is an integer number (12789630).

Almost surely, 2^51103043 is an apocalyptic number.

51103043 is a deficient number, since it is larger than the sum of its proper divisors (55477).

51103043 is an equidigital number, since it uses as much as digits as its factorization.

51103043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55476.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51103043 is about 7148.6392411423. The cubic root of 51103043 is about 371.0925655936.

Adding to 51103043 its reverse (34030115), we get a palindrome (85133158).

The spelling of 51103043 in words is "fifty-one million, one hundred three thousand, forty-three".