5120511481 has 2 divisors, whose sum is σ = 5120511482. Its totient is φ = 5120511480.

The previous prime is 5120511467. The next prime is 5120511547. The reversal of 5120511481 is 1841150215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4780477881 + 340033600 = 69141^2 + 18440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5120511481 is a prime.

It is a super-2 number, since 2×5120511481² = 52439275654105626722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5120511581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560255740 + 2560255741.

It is an arithmetic number, because the mean of its divisors is an integer number (2560255741).

Almost surely, 2^5120511481 is an apocalyptic number.

It is an amenable number.

5120511481 is a deficient number, since it is larger than the sum of its proper divisors (1).

5120511481 is an equidigital number, since it uses as much as digits as its factorization.

5120511481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 5120511481 is about 71557.7492728775. The cubic root of 5120511481 is about 1723.6051434691.

Adding to 5120511481 its reverse (1841150215), we get a palindrome (6961661696).

The spelling of 5120511481 in words is "five billion, one hundred twenty million, five hundred eleven thousand, four hundred eighty-one".