55604349491 has 2 divisors, whose sum is σ = 55604349492. Its totient is φ = 55604349490.

The previous prime is 55604349487. The next prime is 55604349539. The reversal of 55604349491 is 19494340655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55604349491 - 2² = 55604349487 is a prime.

It is a super-3 number, since 3×55604349491³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55604349461) 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, 27802174745 + 27802174746.

It is an arithmetic number, because the mean of its divisors is an integer number (27802174746).

Almost surely, 2^55604349491 is an apocalyptic number.

55604349491 is a deficient number, since it is larger than the sum of its proper divisors (1).

55604349491 is an equidigital number, since it uses as much as digits as its factorization.

55604349491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 55604349491 in words is "fifty-five billion, six hundred four million, three hundred forty-nine thousand, four hundred ninety-one".