55404081049 has 2 divisors, whose sum is σ = 55404081050. Its totient is φ = 55404081048.

The previous prime is 55404081023. The next prime is 55404081101. The reversal of 55404081049 is 94018040455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49550760000 + 5853321049 = 222600^2 + 76507^2 .

It is a cyclic number.

It is not a de Polignac number, because 55404081049 - 2¹¹ = 55404079001 is a prime.

It is a super-2 number, since 2×55404081049² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55404081349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27702040524 + 27702040525.

It is an arithmetic number, because the mean of its divisors is an integer number (27702040525).

Almost surely, 2^55404081049 is an apocalyptic number.

It is an amenable number.

55404081049 is a deficient number, since it is larger than the sum of its proper divisors (1).

55404081049 is an equidigital number, since it uses as much as digits as its factorization.

55404081049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 55404081049 in words is "fifty-five billion, four hundred four million, eighty-one thousand, forty-nine".