56521460111 has 4 divisors (see below), whose sum is σ = 56659654800. Its totient is φ = 56383265424.

The previous prime is 56521460089. The next prime is 56521460131. The reversal of 56521460111 is 11106412565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56521460111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521460131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69096731 + ... + 69097548.

It is an arithmetic number, because the mean of its divisors is an integer number (14164913700).

Almost surely, 2^56521460111 is an apocalyptic number.

56521460111 is a deficient number, since it is larger than the sum of its proper divisors (138194689).

56521460111 is a wasteful number, since it uses less digits than its factorization.

56521460111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138194688.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 56521460111 its reverse (11106412565), we get a palindrome (67627872676).

The spelling of 56521460111 in words is "fifty-six billion, five hundred twenty-one million, four hundred sixty thousand, one hundred eleven".