52167421 has 2 divisors, whose sum is σ = 52167422. Its totient is φ = 52167420.

The previous prime is 52167419. The next prime is 52167431. The reversal of 52167421 is 12476125.

52167421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47265625 + 4901796 = 6875^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 52167421 - 2¹ = 52167419 is a prime.

Together with 52167419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 52167421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52167431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26083710 + 26083711.

It is an arithmetic number, because the mean of its divisors is an integer number (26083711).

Almost surely, 2^52167421 is an apocalyptic number.

It is an amenable number.

52167421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52167421 is an equidigital number, since it uses as much as digits as its factorization.

52167421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 52167421 is about 7222.7017798051. The cubic root of 52167421 is about 373.6512639488.

The spelling of 52167421 in words is "fifty-two million, one hundred sixty-seven thousand, four hundred twenty-one".