55670777 has 2 divisors, whose sum is σ = 55670778. Its totient is φ = 55670776.

The previous prime is 55670773. The next prime is 55670789. The reversal of 55670777 is 77707655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49224256 + 6446521 = 7016^2 + 2539^2 .

It is a cyclic number.

It is not a de Polignac number, because 55670777 - 2² = 55670773 is a prime.

It is not a weakly prime, because it can be changed into another prime (55670773) 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, 27835388 + 27835389.

It is an arithmetic number, because the mean of its divisors is an integer number (27835389).

Almost surely, 2^55670777 is an apocalyptic number.

It is an amenable number.

55670777 is a deficient number, since it is larger than the sum of its proper divisors (1).

55670777 is an equidigital number, since it uses as much as digits as its factorization.

55670777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360150, while the sum is 44.

The square root of 55670777 is about 7461.2852110076. The cubic root of 55670777 is about 381.8350232848.

The spelling of 55670777 in words is "fifty-five million, six hundred seventy thousand, seven hundred seventy-seven".