53521393 has 2 divisors, whose sum is σ = 53521394. Its totient is φ = 53521392.

The previous prime is 53521387. The next prime is 53521439. The reversal of 53521393 is 39312535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 11102224 = 6513^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 53521393 - 2⁹ = 53520881 is a prime.

It is not a weakly prime, because it can be changed into another prime (53521313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26760696 + 26760697.

It is an arithmetic number, because the mean of its divisors is an integer number (26760697).

Almost surely, 2^53521393 is an apocalyptic number.

It is an amenable number.

53521393 is a deficient number, since it is larger than the sum of its proper divisors (1).

53521393 is an equidigital number, since it uses as much as digits as its factorization.

53521393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 31.

The square root of 53521393 is about 7315.8316683751. The cubic root of 53521393 is about 376.8563198564.

The spelling of 53521393 in words is "fifty-three million, five hundred twenty-one thousand, three hundred ninety-three".