52457381 has 2 divisors, whose sum is σ = 52457382. Its totient is φ = 52457380.

The previous prime is 52457369. The next prime is 52457413. The reversal of 52457381 is 18375425.

It is a happy number.

52457381 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., 46036225 + 6421156 = 6785^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 52457381 - 2¹⁸ = 52195237 is a prime.

It is a super-2 number, since 2×52457381² = 5503553642758322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52457341) 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, 26228690 + 26228691.

It is an arithmetic number, because the mean of its divisors is an integer number (26228691).

Almost surely, 2^52457381 is an apocalyptic number.

It is an amenable number.

52457381 is a deficient number, since it is larger than the sum of its proper divisors (1).

52457381 is an equidigital number, since it uses as much as digits as its factorization.

52457381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 52457381 is about 7242.7467855780. The cubic root of 52457381 is about 374.3422686761.

The spelling of 52457381 in words is "fifty-two million, four hundred fifty-seven thousand, three hundred eighty-one".