77792055 has 16 divisors (see below), whose sum is σ = 135782784. Its totient is φ = 37717280.

The previous prime is 77792053. The next prime is 77792059. The reversal of 77792055 is 55029777.

It is not a de Polignac number, because 77792055 - 2¹ = 77792053 is a prime.

It is a super-2 number, since 2×77792055² = 12103207642246050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77791998 and 77792016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77792053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235569 + ... + 235898.

It is an arithmetic number, because the mean of its divisors is an integer number (8486424).

Almost surely, 2^77792055 is an apocalyptic number.

77792055 is a deficient number, since it is larger than the sum of its proper divisors (57990729).

77792055 is a wasteful number, since it uses less digits than its factorization.

77792055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471486.

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 77792055 is about 8819.9804421552. The cubic root of 77792055 is about 426.8858387978.

The spelling of 77792055 in words is "seventy-seven million, seven hundred ninety-two thousand, fifty-five".