51010001 has 8 divisors (see below), whose sum is σ = 58689600. Its totient is φ = 43428528.

The previous prime is 51009967. The next prime is 51010019. The reversal of 51010001 is 10001015.

It is a happy number.

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 51010001 - 2¹⁸ = 50747857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51010051) 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, 23411 + ... + 25496.

It is an arithmetic number, because the mean of its divisors is an integer number (7336200).

Almost surely, 2^51010001 is an apocalyptic number.

It is an amenable number.

51010001 is a deficient number, since it is larger than the sum of its proper divisors (7679599).

51010001 is a wasteful number, since it uses less digits than its factorization.

51010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49063.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 51010001 is about 7142.1286042748. The cubic root of 51010001 is about 370.8672158692.

Adding to 51010001 its reverse (10001015), we get a palindrome (61011016).

The spelling of 51010001 in words is "fifty-one million, ten thousand, one".