77445113 has 2 divisors, whose sum is σ = 77445114. Its totient is φ = 77445112.

The previous prime is 77445089. The next prime is 77445127. The reversal of 77445113 is 31154477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75394489 + 2050624 = 8683^2 + 1432^2 .

It is an emirp because it is prime and its reverse (31154477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77445113 - 2¹⁰ = 77444089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77445113.

It is not a weakly prime, because it can be changed into another prime (77445133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38722556 + 38722557.

It is an arithmetic number, because the mean of its divisors is an integer number (38722557).

Almost surely, 2^77445113 is an apocalyptic number.

It is an amenable number.

77445113 is a deficient number, since it is larger than the sum of its proper divisors (1).

77445113 is an equidigital number, since it uses as much as digits as its factorization.

77445113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 77445113 is about 8800.2905065685. The cubic root of 77445113 is about 426.2502753959.

The spelling of 77445113 in words is "seventy-seven million, four hundred forty-five thousand, one hundred thirteen".