55910173409 has 2 divisors, whose sum is σ = 55910173410. Its totient is φ = 55910173408.

The previous prime is 55910173339. The next prime is 55910173421. The reversal of 55910173409 is 90437101955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30660010000 + 25250163409 = 175100^2 + 158903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55910173409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55910173409.

It is not a weakly prime, because it can be changed into another prime (55910173309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27955086704 + 27955086705.

It is an arithmetic number, because the mean of its divisors is an integer number (27955086705).

Almost surely, 2^55910173409 is an apocalyptic number.

It is an amenable number.

55910173409 is a deficient number, since it is larger than the sum of its proper divisors (1).

55910173409 is an equidigital number, since it uses as much as digits as its factorization.

55910173409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 55910173409 in words is "fifty-five billion, nine hundred ten million, one hundred seventy-three thousand, four hundred nine".