51005013 has 8 divisors (see below), whose sum is σ = 70200576. Its totient is φ = 32906400.

The previous prime is 51004979. The next prime is 51005021. The reversal of 51005013 is 31050015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51005013 - 2¹⁰ = 51003989 is a prime.

It is a super-2 number, since 2×51005013² = 5203022702260338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51004983 and 51005001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274128 + ... + 274313.

It is an arithmetic number, because the mean of its divisors is an integer number (8775072).

Almost surely, 2^51005013 is an apocalyptic number.

It is an amenable number.

51005013 is a deficient number, since it is larger than the sum of its proper divisors (19195563).

51005013 is a wasteful number, since it uses less digits than its factorization.

51005013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548475.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 51005013 is about 7141.7794001215. The cubic root of 51005013 is about 370.8551270896.

Adding to 51005013 its reverse (31050015), we get a palindrome (82055028).

The spelling of 51005013 in words is "fifty-one million, five thousand, thirteen".