53445547 has 2 divisors, whose sum is σ = 53445548. Its totient is φ = 53445546.

The previous prime is 53445541. The next prime is 53445589. The reversal of 53445547 is 74554435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53445547 - 2¹¹ = 53443499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53445541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26722773 + 26722774.

It is an arithmetic number, because the mean of its divisors is an integer number (26722774).

Almost surely, 2^53445547 is an apocalyptic number.

53445547 is a deficient number, since it is larger than the sum of its proper divisors (1).

53445547 is an equidigital number, since it uses as much as digits as its factorization.

53445547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168000, while the sum is 37.

The square root of 53445547 is about 7310.6461410740. The cubic root of 53445547 is about 376.6782193792.

The spelling of 53445547 in words is "fifty-three million, four hundred forty-five thousand, five hundred forty-seven".