51161326 has 4 divisors (see below), whose sum is σ = 76741992. Its totient is φ = 25580662.

The previous prime is 51161323. The next prime is 51161353. The reversal of 51161326 is 62316115.

51161326 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 is a self number, because there is not a number n which added to its sum of digits gives 51161326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51161321) 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 as a sum of consecutive naturals, namely, 12790330 + ... + 12790333.

It is an arithmetic number, because the mean of its divisors is an integer number (19185498).

Almost surely, 2^51161326 is an apocalyptic number.

51161326 is a deficient number, since it is larger than the sum of its proper divisors (25580666).

51161326 is a wasteful number, since it uses less digits than its factorization.

51161326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25580665.

The product of its digits is 1080, while the sum is 25.

The square root of 51161326 is about 7152.7145895807. The cubic root of 51161326 is about 371.2335889687.

The spelling of 51161326 in words is "fifty-one million, one hundred sixty-one thousand, three hundred twenty-six".