52400111 has 4 divisors (see below), whose sum is σ = 52458792. Its totient is φ = 52341432.

The previous prime is 52400087. The next prime is 52400149. The reversal of 52400111 is 11100425.

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-52400111 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 (52400311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27980 + ... + 29793.

It is an arithmetic number, because the mean of its divisors is an integer number (13114698).

Almost surely, 2^52400111 is an apocalyptic number.

52400111 is a deficient number, since it is larger than the sum of its proper divisors (58681).

52400111 is an equidigital number, since it uses as much as digits as its factorization.

52400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58680.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 52400111 is about 7238.7920953706. The cubic root of 52400111 is about 374.2059905022.

Adding to 52400111 its reverse (11100425), we get a palindrome (63500536).

The spelling of 52400111 in words is "fifty-two million, four hundred thousand, one hundred eleven".