55550011513 has 2 divisors, whose sum is σ = 55550011514. Its totient is φ = 55550011512.

The previous prime is 55550011487. The next prime is 55550011549. The reversal of 55550011513 is 31511005555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50558871609 + 4991139904 = 224853^2 + 70648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55550011513 is a prime.

It is not a weakly prime, because it can be changed into another prime (55550012513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775005756 + 27775005757.

It is an arithmetic number, because the mean of its divisors is an integer number (27775005757).

Almost surely, 2^55550011513 is an apocalyptic number.

It is an amenable number.

55550011513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550011513 is an equidigital number, since it uses as much as digits as its factorization.

55550011513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9375, while the sum is 31.

The spelling of 55550011513 in words is "fifty-five billion, five hundred fifty million, eleven thousand, five hundred thirteen".