52644391 has 2 divisors, whose sum is σ = 52644392. Its totient is φ = 52644390.

The previous prime is 52644373. The next prime is 52644407. The reversal of 52644391 is 19344625.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52644391 - 2⁹ = 52643879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52644311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26322195 + 26322196.

It is an arithmetic number, because the mean of its divisors is an integer number (26322196).

Almost surely, 2^52644391 is an apocalyptic number.

52644391 is a deficient number, since it is larger than the sum of its proper divisors (1).

52644391 is an equidigital number, since it uses as much as digits as its factorization.

52644391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 52644391 is about 7255.6454571595. The cubic root of 52644391 is about 374.7865831576.

It can be divided in two parts, 52644 and 391, that added together give a palindrome (53035).

The spelling of 52644391 in words is "fifty-two million, six hundred forty-four thousand, three hundred ninety-one".