51130601 has 4 divisors (see below), whose sum is σ = 51171204. Its totient is φ = 51090000.

The previous prime is 51130591. The next prime is 51130609. The reversal of 51130601 is 10603115.

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 4618201 + 46512400 = 2149^2 + 6820^2 .

It is a cyclic number.

It is not a de Polignac number, because 51130601 - 2⁶ = 51130537 is a prime.

It is a super-2 number, since 2×51130601² = 5228676717242402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51130601.

It is not an unprimeable number, because it can be changed into a prime (51130609) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 18350 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (12792801).

Almost surely, 2^51130601 is an apocalyptic number.

It is an amenable number.

51130601 is a deficient number, since it is larger than the sum of its proper divisors (40603).

51130601 is a wasteful number, since it uses less digits than its factorization.

51130601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40602.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 51130601 is about 7150.5664810559. The cubic root of 51130601 is about 371.1592591510.

Adding to 51130601 its reverse (10603115), we get a palindrome (61733716).

The spelling of 51130601 in words is "fifty-one million, one hundred thirty thousand, six hundred one".