53745817 has 2 divisors, whose sum is σ = 53745818. Its totient is φ = 53745816.

The previous prime is 53745773. The next prime is 53745893. The reversal of 53745817 is 71854735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51423241 + 2322576 = 7171^2 + 1524^2 .

It is a cyclic number.

It is not a de Polignac number, because 53745817 - 2⁷ = 53745689 is a prime.

It is a super-2 number, since 2×53745817² = 5777225689994978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53745817.

It is not a weakly prime, because it can be changed into another prime (53745617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26872908 + 26872909.

It is an arithmetic number, because the mean of its divisors is an integer number (26872909).

Almost surely, 2^53745817 is an apocalyptic number.

It is an amenable number.

53745817 is a deficient number, since it is larger than the sum of its proper divisors (1).

53745817 is an equidigital number, since it uses as much as digits as its factorization.

53745817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 53745817 is about 7331.1538655249. The cubic root of 53745817 is about 377.3823254994.

The spelling of 53745817 in words is "fifty-three million, seven hundred forty-five thousand, eight hundred seventeen".