52218541 has 2 divisors, whose sum is σ = 52218542. Its totient is φ = 52218540.

The previous prime is 52218503. The next prime is 52218553. The reversal of 52218541 is 14581225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49294441 + 2924100 = 7021^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 52218541 - 2⁹ = 52218029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52218841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26109270 + 26109271.

It is an arithmetic number, because the mean of its divisors is an integer number (26109271).

Almost surely, 2^52218541 is an apocalyptic number.

It is an amenable number.

52218541 is a deficient number, since it is larger than the sum of its proper divisors (1).

52218541 is an equidigital number, since it uses as much as digits as its factorization.

52218541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 28.

The square root of 52218541 is about 7226.2397552254. The cubic root of 52218541 is about 373.7732737937.

Adding to 52218541 its reverse (14581225), we get a palindrome (66799766).

The spelling of 52218541 in words is "fifty-two million, two hundred eighteen thousand, five hundred forty-one".