56526617971 has 4 divisors (see below), whose sum is σ = 57161748600. Its totient is φ = 55891487344.

The previous prime is 56526617969. The next prime is 56526617977. The reversal of 56526617971 is 17971662565.

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

It is a cyclic number.

It is not a de Polignac number, because 56526617971 - 2¹ = 56526617969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56526617977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317565181 + ... + 317565358.

It is an arithmetic number, because the mean of its divisors is an integer number (14290437150).

Almost surely, 2^56526617971 is an apocalyptic number.

56526617971 is a deficient number, since it is larger than the sum of its proper divisors (635130629).

56526617971 is an equidigital number, since it uses as much as digits as its factorization.

56526617971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635130628.

The product of its digits is 4762800, while the sum is 55.

The spelling of 56526617971 in words is "fifty-six billion, five hundred twenty-six million, six hundred seventeen thousand, nine hundred seventy-one".