77051385 has 32 divisors (see below), whose sum is σ = 138360960. Its totient is φ = 40680000.

The previous prime is 77051383. The next prime is 77051389. The reversal of 77051385 is 58315077.

It is not a de Polignac number, because 77051385 - 2¹ = 77051383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77051383) 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 in 31 ways as a sum of consecutive naturals, for example, 10810 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (4323780).

Almost surely, 2^77051385 is an apocalyptic number.

It is an amenable number.

77051385 is a deficient number, since it is larger than the sum of its proper divisors (61309575).

77051385 is a wasteful number, since it uses less digits than its factorization.

77051385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5766 (or 5760 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 77051385 is about 8777.8918311859. The cubic root of 77051385 is about 425.5267010860.

The spelling of 77051385 in words is "seventy-seven million, fifty-one thousand, three hundred eighty-five".