52113421 has 2 divisors, whose sum is σ = 52113422. Its totient is φ = 52113420.

The previous prime is 52113401. The next prime is 52113437. The reversal of 52113421 is 12431125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 16281225 = 5986^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 52113421 - 2²⁵ = 18558989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52113401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26056710 + 26056711.

It is an arithmetic number, because the mean of its divisors is an integer number (26056711).

Almost surely, 2^52113421 is an apocalyptic number.

It is an amenable number.

52113421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52113421 is an equidigital number, since it uses as much as digits as its factorization.

52113421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 52113421 is about 7218.9625986010. The cubic root of 52113421 is about 373.5222937099.

Adding to 52113421 its reverse (12431125), we get a palindrome (64544546).

The spelling of 52113421 in words is "fifty-two million, one hundred thirteen thousand, four hundred twenty-one".