53178457 has 2 divisors, whose sum is σ = 53178458. Its totient is φ = 53178456.

The previous prime is 53178449. The next prime is 53178467. The reversal of 53178457 is 75487135.

53178457 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., 53056656 + 121801 = 7284^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 53178457 - 2³ = 53178449 is a prime.

It is not a weakly prime, because it can be changed into another prime (53178427) 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, 26589228 + 26589229.

It is an arithmetic number, because the mean of its divisors is an integer number (26589229).

Almost surely, 2^53178457 is an apocalyptic number.

It is an amenable number.

53178457 is a deficient number, since it is larger than the sum of its proper divisors (1).

53178457 is an equidigital number, since it uses as much as digits as its factorization.

53178457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 53178457 is about 7292.3560664575. The cubic root of 53178457 is about 376.0496977655.

It can be divided in two parts, 53178 and 457, that added together give a palindrome (53635).

The spelling of 53178457 in words is "fifty-three million, one hundred seventy-eight thousand, four hundred fifty-seven".