52026421 has 2 divisors, whose sum is σ = 52026422. Its totient is φ = 52026420.

The previous prime is 52026419. The next prime is 52026487. The reversal of 52026421 is 12462025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47803396 + 4223025 = 6914^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 52026421 - 2¹ = 52026419 is a prime.

Together with 52026419, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52026392 and 52026401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52026521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26013210 + 26013211.

It is an arithmetic number, because the mean of its divisors is an integer number (26013211).

Almost surely, 2^52026421 is an apocalyptic number.

It is an amenable number.

52026421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52026421 is an equidigital number, since it uses as much as digits as its factorization.

52026421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 52026421 is about 7212.9342850188. The cubic root of 52026421 is about 373.3143207969.

Adding to 52026421 its reverse (12462025), we get a palindrome (64488446).

The spelling of 52026421 in words is "fifty-two million, twenty-six thousand, four hundred twenty-one".