51170461 has 4 divisors (see below), whose sum is σ = 51745500. Its totient is φ = 50595424.

The previous prime is 51170437. The next prime is 51170479. The reversal of 51170461 is 16407115.

It is a happy number.

51170461 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 11088900 + 40081561 = 3330^2 + 6331^2 .

It is a cyclic number.

It is not a de Polignac number, because 51170461 - 2¹¹ = 51168413 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 (51170411) 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, 287386 + ... + 287563.

It is an arithmetic number, because the mean of its divisors is an integer number (12936375).

Almost surely, 2^51170461 is an apocalyptic number.

It is an amenable number.

51170461 is a deficient number, since it is larger than the sum of its proper divisors (575039).

51170461 is an equidigital number, since it uses as much as digits as its factorization.

51170461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575038.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 51170461 is about 7153.3531298266. The cubic root of 51170461 is about 371.2556825909.

Adding to 51170461 its reverse (16407115), we get a palindrome (67577576).

The spelling of 51170461 in words is "fifty-one million, one hundred seventy thousand, four hundred sixty-one".