13056977 has 4 divisors (see below), whose sum is σ = 13186356. Its totient is φ = 12927600.

The previous prime is 13056973. The next prime is 13057007. The reversal of 13056977 is 77965031.

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 10863616 + 2193361 = 3296^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 13056977 - 2² = 13056973 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 13056977.

It is not an unprimeable number, because it can be changed into a prime (13056973) 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, 64538 + ... + 64739.

It is an arithmetic number, because the mean of its divisors is an integer number (3296589).

Almost surely, 2^13056977 is an apocalyptic number.

It is an amenable number.

13056977 is a deficient number, since it is larger than the sum of its proper divisors (129379).

13056977 is a wasteful number, since it uses less digits than its factorization.

13056977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129378.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 13056977 is about 3613.4439251218. The cubic root of 13056977 is about 235.4764860682.

The spelling of 13056977 in words is "thirteen million, fifty-six thousand, nine hundred seventy-seven".