53820647 has 2 divisors, whose sum is σ = 53820648. Its totient is φ = 53820646.

The previous prime is 53820629. The next prime is 53820707. The reversal of 53820647 is 74602835.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53820647 - 2¹⁴ = 53804263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53820617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26910323 + 26910324.

It is an arithmetic number, because the mean of its divisors is an integer number (26910324).

Almost surely, 2^53820647 is an apocalyptic number.

53820647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53820647 is an equidigital number, since it uses as much as digits as its factorization.

53820647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 53820647 is about 7336.2556525792. The cubic root of 53820647 is about 377.5573867116.

The spelling of 53820647 in words is "fifty-three million, eight hundred twenty thousand, six hundred forty-seven".