53445617 has 2 divisors, whose sum is σ = 53445618. Its totient is φ = 53445616.

The previous prime is 53445593. The next prime is 53445619. The reversal of 53445617 is 71654435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32615521 + 20830096 = 5711^2 + 4564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53445617 is a prime.

Together with 53445619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53445619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26722808 + 26722809.

It is an arithmetic number, because the mean of its divisors is an integer number (26722809).

Almost surely, 2^53445617 is an apocalyptic number.

It is an amenable number.

53445617 is a deficient number, since it is larger than the sum of its proper divisors (1).

53445617 is an equidigital number, since it uses as much as digits as its factorization.

53445617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 53445617 is about 7310.6509286109. The cubic root of 53445617 is about 376.6783838299.

The spelling of 53445617 in words is "fifty-three million, four hundred forty-five thousand, six hundred seventeen".