51204005 has 8 divisors (see below), whose sum is σ = 61822752. Its totient is φ = 40711248.

The previous prime is 51204001. The next prime is 51204007. The reversal of 51204005 is 50040215.

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 51204005 - 2² = 51204001 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 (51204001) 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, 30599 + ... + 32228.

It is an arithmetic number, because the mean of its divisors is an integer number (7727844).

Almost surely, 2^51204005 is an apocalyptic number.

It is an amenable number.

51204005 is a deficient number, since it is larger than the sum of its proper divisors (10618747).

51204005 is a wasteful number, since it uses less digits than its factorization.

51204005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62995.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 51204005 is about 7155.6973804095. The cubic root of 51204005 is about 371.3367885008.

The spelling of 51204005 in words is "fifty-one million, two hundred four thousand, five".