51006001 has 8 divisors (see below), whose sum is σ = 54167400. Its totient is φ = 47862528.

The previous prime is 51005993. The next prime is 51006023. The reversal of 51006001 is 10060015.

It can be written as a sum of positive squares in 4 ways, for example, as 24750625 + 26255376 = 4975^2 + 5124^2 .

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 51006001 - 2³ = 51005993 is a prime.

It is a super-2 number, since 2×51006001² = 5203224276024002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51006061) 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, 1635 + ... + 10231.

It is an arithmetic number, because the mean of its divisors is an integer number (6770925).

Almost surely, 2^51006001 is an apocalyptic number.

It is an amenable number.

51006001 is a deficient number, since it is larger than the sum of its proper divisors (3161399).

51006001 is a wasteful number, since it uses less digits than its factorization.

51006001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51006001 is about 7141.8485702233. The cubic root of 51006001 is about 370.8575216418.

Adding to 51006001 its reverse (10060015), we get a palindrome (61066016).

The spelling of 51006001 in words is "fifty-one million, six thousand, one".