53515447 has 2 divisors, whose sum is σ = 53515448. Its totient is φ = 53515446.

The previous prime is 53515391. The next prime is 53515471. The reversal of 53515447 is 74451535.

53515447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53515447 - 2¹⁵ = 53482679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53515487) 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, 26757723 + 26757724.

It is an arithmetic number, because the mean of its divisors is an integer number (26757724).

Almost surely, 2^53515447 is an apocalyptic number.

53515447 is a deficient number, since it is larger than the sum of its proper divisors (1).

53515447 is an equidigital number, since it uses as much as digits as its factorization.

53515447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 53515447 is about 7315.4252781366. The cubic root of 53515447 is about 376.8423636261.

It can be divided in two parts, 535 and 15447, that multiplied together give a triangular number (8264145 = T₄₀₆₅).

The spelling of 53515447 in words is "fifty-three million, five hundred fifteen thousand, four hundred forty-seven".