56277689 has 4 divisors (see below), whose sum is σ = 60606756. Its totient is φ = 51948624.

The previous prime is 56277643. The next prime is 56277721. The reversal of 56277689 is 98677265.

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 30063289 + 26214400 = 5483^2 + 5120^2 .

It is not a de Polignac number, because 56277689 - 2¹² = 56273593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56277589) 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, 2164514 + ... + 2164539.

It is an arithmetic number, because the mean of its divisors is an integer number (15151689).

Almost surely, 2^56277689 is an apocalyptic number.

It is an amenable number.

56277689 is a deficient number, since it is larger than the sum of its proper divisors (4329067).

56277689 is a wasteful number, since it uses less digits than its factorization.

56277689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329066.

The product of its digits is 1270080, while the sum is 50.

The square root of 56277689 is about 7501.8457062246. The cubic root of 56277689 is about 383.2175750449.

The spelling of 56277689 in words is "fifty-six million, two hundred seventy-seven thousand, six hundred eighty-nine".