77052377 has 4 divisors (see below), whose sum is σ = 77077476. Its totient is φ = 77027280.

The previous prime is 77052359. The next prime is 77052379. The reversal of 77052377 is 77325077.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49970761 + 27081616 = 7069^2 + 5204^2 .

It is a cyclic number.

It is not a de Polignac number, because 77052377 - 2⁸ = 77052121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77052377.

It is not an unprimeable number, because it can be changed into a prime (77052379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7178 + ... + 14339.

It is an arithmetic number, because the mean of its divisors is an integer number (19269369).

Almost surely, 2^77052377 is an apocalyptic number.

It is an amenable number.

77052377 is a deficient number, since it is larger than the sum of its proper divisors (25099).

77052377 is a wasteful number, since it uses less digits than its factorization.

77052377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25098.

The product of its (nonzero) digits is 72030, while the sum is 38.

The square root of 77052377 is about 8777.9483365989. The cubic root of 77052377 is about 425.5285272296.

The spelling of 77052377 in words is "seventy-seven million, fifty-two thousand, three hundred seventy-seven".