51105601 has 4 divisors (see below), whose sum is σ = 51182212. Its totient is φ = 51028992.

The previous prime is 51105599. The next prime is 51105619. The reversal of 51105601 is 10650115.

51105601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 24850225 = 5124^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 51105601 - 2¹ = 51105599 is a prime.

It is a super-2 number, since 2×51105601² = 5223564907142402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51105641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37296 + ... + 38641.

It is an arithmetic number, because the mean of its divisors is an integer number (12795553).

Almost surely, 2^51105601 is an apocalyptic number.

It is an amenable number.

51105601 is a deficient number, since it is larger than the sum of its proper divisors (76611).

51105601 is an equidigital number, since it uses as much as digits as its factorization.

51105601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76610.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 51105601 is about 7148.8181540727. The cubic root of 51105601 is about 371.0987572597.

Adding to 51105601 its reverse (10650115), we get a palindrome (61755716).

The spelling of 51105601 in words is "fifty-one million, one hundred five thousand, six hundred one".