55573289939 has 2 divisors, whose sum is σ = 55573289940. Its totient is φ = 55573289938.

The previous prime is 55573289923. The next prime is 55573289951. The reversal of 55573289939 is 93998237555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55573289939 - 2⁴ = 55573289923 is a prime.

It is not a weakly prime, because it can be changed into another prime (55573285939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27786644969 + 27786644970.

It is an arithmetic number, because the mean of its divisors is an integer number (27786644970).

Almost surely, 2^55573289939 is an apocalyptic number.

55573289939 is a deficient number, since it is larger than the sum of its proper divisors (1).

55573289939 is an equidigital number, since it uses as much as digits as its factorization.

55573289939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854000, while the sum is 65.

The spelling of 55573289939 in words is "fifty-five billion, five hundred seventy-three million, two hundred eighty-nine thousand, nine hundred thirty-nine".