51520424041 has 8 divisors (see below), whose sum is σ = 53507397960. Its totient is φ = 49564741248.

The previous prime is 51520424027. The next prime is 51520424089. The reversal of 51520424041 is 14042402515.

It can be written as a sum of positive squares in 4 ways, for example, as 21492732816 + 30027691225 = 146604^2 + 173285^2 .

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 51520424041 - 2¹⁷ = 51520292969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51520424341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7819426 + ... + 7826011.

It is an arithmetic number, because the mean of its divisors is an integer number (6688424745).

Almost surely, 2^51520424041 is an apocalyptic number.

It is an amenable number.

51520424041 is a deficient number, since it is larger than the sum of its proper divisors (1986973919).

51520424041 is a wasteful number, since it uses less digits than its factorization.

51520424041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15645563.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 51520424041 its reverse (14042402515), we get a palindrome (65562826556).

The spelling of 51520424041 in words is "fifty-one billion, five hundred twenty million, four hundred twenty-four thousand, forty-one".