51010261 has 8 divisors (see below), whose sum is σ = 51897240. Its totient is φ = 50130432.

The previous prime is 51010259. The next prime is 51010277. The reversal of 51010261 is 16201015.

It is a happy number.

51010261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22184100 + 28826161 = 4710^2 + 5369^2 .

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 51010261 - 2¹ = 51010259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51010291) 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 7 ways as a sum of consecutive naturals, for example, 13741 + ... + 17053.

It is an arithmetic number, because the mean of its divisors is an integer number (6487155).

Almost surely, 2^51010261 is an apocalyptic number.

It is an amenable number.

51010261 is a deficient number, since it is larger than the sum of its proper divisors (886979).

51010261 is a wasteful number, since it uses less digits than its factorization.

51010261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51010261 is about 7142.1468061081. The cubic root of 51010261 is about 370.8678459764.

Adding to 51010261 its reverse (16201015), we get a palindrome (67211276).

The spelling of 51010261 in words is "fifty-one million, ten thousand, two hundred sixty-one".