77160055 has 24 divisors (see below), whose sum is σ = 112400352. Its totient is φ = 50605632.

The previous prime is 77160053. The next prime is 77160067. The reversal of 77160055 is 55006177.

It is not a de Polignac number, because 77160055 - 2¹ = 77160053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77159999 and 77160026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77160053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1212 + ... + 12481.

It is an arithmetic number, because the mean of its divisors is an integer number (4683348).

Almost surely, 2^77160055 is an apocalyptic number.

77160055 is a deficient number, since it is larger than the sum of its proper divisors (35240297).

77160055 is a wasteful number, since it uses less digits than its factorization.

77160055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735 (or 13728 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 77160055 is about 8784.0796330634. The cubic root of 77160055 is about 425.7266553736.

The spelling of 77160055 in words is "seventy-seven million, one hundred sixty thousand, fifty-five".