51000106 has 4 divisors (see below), whose sum is σ = 76500162. Its totient is φ = 25500052.

The previous prime is 51000083. The next prime is 51000113. The reversal of 51000106 is 60100015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 11498881 = 6285^2 + 3391^2 .

It is a super-2 number, since 2×51000106² = 5202021624022472, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12750025 + ... + 12750028.

Almost surely, 2^51000106 is an apocalyptic number.

51000106 is a deficient number, since it is larger than the sum of its proper divisors (25500056).

51000106 is a wasteful number, since it uses less digits than its factorization.

51000106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25500055.

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

The square root of 51000106 is about 7141.4358500234. The cubic root of 51000106 is about 370.8432338503.

Subtracting 51000106 from its reverse (60100015), we obtain a palindrome (9099909).

The spelling of 51000106 in words is "fifty-one million, one hundred six", and thus it is an aban number.