51504504511 has 2 divisors, whose sum is σ = 51504504512. Its totient is φ = 51504504510.

The previous prime is 51504504503. The next prime is 51504504523. The reversal of 51504504511 is 11540540515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51504504511 - 2³ = 51504504503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504504811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752252255 + 25752252256.

It is an arithmetic number, because the mean of its divisors is an integer number (25752252256).

Almost surely, 2^51504504511 is an apocalyptic number.

51504504511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504504511 is an equidigital number, since it uses as much as digits as its factorization.

51504504511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 51504504511 in words is "fifty-one billion, five hundred four million, five hundred four thousand, five hundred eleven".