51005043 has 12 divisors (see below), whose sum is σ = 73736208. Its totient is φ = 33974640.

The previous prime is 51005039. The next prime is 51005057. The reversal of 51005043 is 34050015.

It is not a de Polignac number, because 51005043 - 2² = 51005039 is a prime.

It is a super-2 number, since 2×51005043² = 5203028822863698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51001043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17946 + ... + 20592.

It is an arithmetic number, because the mean of its divisors is an integer number (6144684).

Almost surely, 2^51005043 is an apocalyptic number.

51005043 is a deficient number, since it is larger than the sum of its proper divisors (22731165).

51005043 is a wasteful number, since it uses less digits than its factorization.

51005043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4791 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 51005043 is about 7141.7815004381. The cubic root of 51005043 is about 370.8551997991.

Adding to 51005043 its reverse (34050015), we get a palindrome (85055058).

The spelling of 51005043 in words is "fifty-one million, five thousand, forty-three".