52001111 has 4 divisors (see below), whose sum is σ = 52291800. Its totient is φ = 51710424.

The previous prime is 52001107. The next prime is 52001141. The reversal of 52001111 is 11110025.

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 52001111 - 2² = 52001107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52001092 and 52001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52001101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145076 + ... + 145433.

It is an arithmetic number, because the mean of its divisors is an integer number (13072950).

Almost surely, 2^52001111 is an apocalyptic number.

52001111 is a deficient number, since it is larger than the sum of its proper divisors (290689).

52001111 is a wasteful number, since it uses less digits than its factorization.

52001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290688.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 52001111 is about 7211.1795845063. The cubic root of 52001111 is about 373.2537738807.

Adding to 52001111 its reverse (11110025), we get a palindrome (63111136).

The spelling of 52001111 in words is "fifty-two million, one thousand, one hundred eleven".