55550611393 has 2 divisors, whose sum is σ = 55550611394. Its totient is φ = 55550611392.

The previous prime is 55550611387. The next prime is 55550611409. The reversal of 55550611393 is 39311605555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42022130049 + 13528481344 = 204993^2 + 116312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55550611393 is a prime.

It is a super-2 number, since 2×55550611393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55550611343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775305696 + 27775305697.

It is an arithmetic number, because the mean of its divisors is an integer number (27775305697).

Almost surely, 2^55550611393 is an apocalyptic number.

It is an amenable number.

55550611393 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550611393 is an equidigital number, since it uses as much as digits as its factorization.

55550611393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 303750, while the sum is 43.

The spelling of 55550611393 in words is "fifty-five billion, five hundred fifty million, six hundred eleven thousand, three hundred ninety-three".