55552541509 has 2 divisors, whose sum is σ = 55552541510. Its totient is φ = 55552541508.

The previous prime is 55552541423. The next prime is 55552541519. The reversal of 55552541509 is 90514525555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31495600900 + 24056940609 = 177470^2 + 155103^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552541509 - 2⁹ = 55552540997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55552541519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776270754 + 27776270755.

It is an arithmetic number, because the mean of its divisors is an integer number (27776270755).

Almost surely, 2^55552541509 is an apocalyptic number.

It is an amenable number.

55552541509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552541509 is an equidigital number, since it uses as much as digits as its factorization.

55552541509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125000, while the sum is 46.

The spelling of 55552541509 in words is "fifty-five billion, five hundred fifty-two million, five hundred forty-one thousand, five hundred nine".