55201035509 has 2 divisors, whose sum is σ = 55201035510. Its totient is φ = 55201035508.

The previous prime is 55201035451. The next prime is 55201035583. The reversal of 55201035509 is 90553010255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47951364484 + 7249671025 = 218978^2 + 85145^2 .

It is a cyclic number.

It is not a de Polignac number, because 55201035509 - 2²⁸ = 54932600053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55201035709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27600517754 + 27600517755.

It is an arithmetic number, because the mean of its divisors is an integer number (27600517755).

Almost surely, 2^55201035509 is an apocalyptic number.

It is an amenable number.

55201035509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55201035509 is an equidigital number, since it uses as much as digits as its factorization.

55201035509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 35.

The spelling of 55201035509 in words is "fifty-five billion, two hundred one million, thirty-five thousand, five hundred nine".