77000055 has 64 divisors (see below), whose sum is σ = 144281088. Its totient is φ = 34652160.

The previous prime is 77000047. The next prime is 77000069. The reversal of 77000055 is 55000077.

It is not a de Polignac number, because 77000055 - 2³ = 77000047 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 76999989 and 77000034.

It is a congruent number.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 271944 + ... + 272226.

It is an arithmetic number, because the mean of its divisors is an integer number (2254392).

Almost surely, 2^77000055 is an apocalyptic number.

77000055 is a deficient number, since it is larger than the sum of its proper divisors (67281033).

77000055 is a wasteful number, since it uses less digits than its factorization.

77000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 77000055 is about 8774.9675213074. The cubic root of 77000055 is about 425.4321878048.

The spelling of 77000055 in words is "seventy-seven million, fifty-five", and thus it is an aban number and an uban number.