56127691 has 4 divisors (see below), whose sum is σ = 59081800. Its totient is φ = 53173584.

The previous prime is 56127649. The next prime is 56127707. The reversal of 56127691 is 19672165.

56127691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19672165 = 5 ⋅3934433.

It is a cyclic number.

It is not a de Polignac number, because 56127691 - 2⁷ = 56127563 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 56127691.

It is not an unprimeable number, because it can be changed into a prime (56127641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477026 + ... + 1477063.

It is an arithmetic number, because the mean of its divisors is an integer number (14770450).

Almost surely, 2^56127691 is an apocalyptic number.

56127691 is a deficient number, since it is larger than the sum of its proper divisors (2954109).

56127691 is a wasteful number, since it uses less digits than its factorization.

56127691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954108.

The product of its digits is 22680, while the sum is 37.

The square root of 56127691 is about 7491.8416293993. The cubic root of 56127691 is about 382.8768064042.

The spelling of 56127691 in words is "fifty-six million, one hundred twenty-seven thousand, six hundred ninety-one".