52189421 has 2 divisors, whose sum is σ = 52189422. Its totient is φ = 52189420.

The previous prime is 52189367. The next prime is 52189441. The reversal of 52189421 is 12498125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34456900 + 17732521 = 5870^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 52189421 - 2¹⁰ = 52188397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52189441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26094710 + 26094711.

It is an arithmetic number, because the mean of its divisors is an integer number (26094711).

Almost surely, 2^52189421 is an apocalyptic number.

It is an amenable number.

52189421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52189421 is an equidigital number, since it uses as much as digits as its factorization.

52189421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 52189421 is about 7224.2245950690. The cubic root of 52189421 is about 373.7037818637.

The spelling of 52189421 in words is "fifty-two million, one hundred eighty-nine thousand, four hundred twenty-one".