53501647 has 2 divisors, whose sum is σ = 53501648. Its totient is φ = 53501646.

The previous prime is 53501603. The next prime is 53501659. The reversal of 53501647 is 74610535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53501647 - 2²³ = 45113039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53501677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26750823 + 26750824.

It is an arithmetic number, because the mean of its divisors is an integer number (26750824).

Almost surely, 2^53501647 is an apocalyptic number.

53501647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53501647 is an equidigital number, since it uses as much as digits as its factorization.

53501647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 53501647 is about 7314.4820048996. The cubic root of 53501647 is about 376.8099687944.

The spelling of 53501647 in words is "fifty-three million, five hundred one thousand, six hundred forty-seven".