52520545111 has 4 divisors (see below), whose sum is σ = 53304433912. Its totient is φ = 51736656312.

The previous prime is 52520545109. The next prime is 52520545153. The reversal of 52520545111 is 11154502525.

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 52520545111 - 2¹ = 52520545109 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 (52520545171) 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, 391944300 + ... + 391944433.

It is an arithmetic number, because the mean of its divisors is an integer number (13326108478).

Almost surely, 2^52520545111 is an apocalyptic number.

52520545111 is a deficient number, since it is larger than the sum of its proper divisors (783888801).

52520545111 is an equidigital number, since it uses as much as digits as its factorization.

52520545111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783888800.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 52520545111 in words is "fifty-two billion, five hundred twenty million, five hundred forty-five thousand, one hundred eleven".