55536091213 has 2 divisors, whose sum is σ = 55536091214. Its totient is φ = 55536091212.

The previous prime is 55536091207. The next prime is 55536091253. The reversal of 55536091213 is 31219063555.

It is an a-pointer prime, because the next prime (55536091253) can be obtained adding 55536091213 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51803125609 + 3732965604 = 227603^2 + 61098^2 .

It is a cyclic number.

It is not a de Polignac number, because 55536091213 - 2¹⁷ = 55535960141 is a prime.

It is a super-2 number, since 2×55536091213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55536091253) 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, 27768045606 + 27768045607.

It is an arithmetic number, because the mean of its divisors is an integer number (27768045607).

Almost surely, 2^55536091213 is an apocalyptic number.

It is an amenable number.

55536091213 is a deficient number, since it is larger than the sum of its proper divisors (1).

55536091213 is an equidigital number, since it uses as much as digits as its factorization.

55536091213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121500, while the sum is 40.

The spelling of 55536091213 in words is "fifty-five billion, five hundred thirty-six million, ninety-one thousand, two hundred thirteen".