52180811 has 4 divisors (see below), whose sum is σ = 52915824. Its totient is φ = 51445800.

The previous prime is 52180787. The next prime is 52180829. The reversal of 52180811 is 11808125.

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 52180811 - 2¹⁸ = 51918667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52180861) 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, 367400 + ... + 367541.

It is an arithmetic number, because the mean of its divisors is an integer number (13228956).

Almost surely, 2^52180811 is an apocalyptic number.

52180811 is a deficient number, since it is larger than the sum of its proper divisors (735013).

52180811 is an equidigital number, since it uses as much as digits as its factorization.

52180811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735012.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 52180811 is about 7223.6286587836. The cubic root of 52180811 is about 373.6832300197.

Adding to 52180811 its reverse (11808125), we get a palindrome (63988936).

The spelling of 52180811 in words is "fifty-two million, one hundred eighty thousand, eight hundred eleven".