51045331441 has 4 divisors (see below), whose sum is σ = 54971895412. Its totient is φ = 47118767472.

The previous prime is 51045331439. The next prime is 51045331453. The reversal of 51045331441 is 14413354015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14413354015 = 5 ⋅2882670803.

It can be written as a sum of positive squares in 2 ways, for example, as 23257775025 + 27787556416 = 152505^2 + 166696^2 .

It is a cyclic number.

It is not a de Polignac number, because 51045331441 - 2¹ = 51045331439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51045331471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963281966 + ... + 1963281991.

It is an arithmetic number, because the mean of its divisors is an integer number (13742973853).

Almost surely, 2^51045331441 is an apocalyptic number.

It is an amenable number.

51045331441 is a deficient number, since it is larger than the sum of its proper divisors (3926563971).

51045331441 is a wasteful number, since it uses less digits than its factorization.

51045331441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926563970.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 51045331441 its reverse (14413354015), we get a palindrome (65458685456).

The spelling of 51045331441 in words is "fifty-one billion, forty-five million, three hundred thirty-one thousand, four hundred forty-one".