51004613 has 8 divisors (see below), whose sum is σ = 55810560. Its totient is φ = 46226880.

The previous prime is 51004609. The next prime is 51004619. The reversal of 51004613 is 31640015.

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

It is a cyclic number.

It is not a de Polignac number, because 51004613 - 2² = 51004609 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 (51004619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3173 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (6976320).

Almost surely, 2^51004613 is an apocalyptic number.

It is an amenable number.

51004613 is a deficient number, since it is larger than the sum of its proper divisors (4805947).

51004613 is a wasteful number, since it uses less digits than its factorization.

51004613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51004613 is about 7141.7513958412. The cubic root of 51004613 is about 370.8541576265.

Adding to 51004613 its reverse (31640015), we get a palindrome (82644628).

The spelling of 51004613 in words is "fifty-one million, four thousand, six hundred thirteen".