53403073 has 2 divisors, whose sum is σ = 53403074. Its totient is φ = 53403072.

The previous prime is 53403071. The next prime is 53403089. The reversal of 53403073 is 37030435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50865424 + 2537649 = 7132^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 53403073 - 2¹ = 53403071 is a prime.

Together with 53403071, it forms a pair of twin primes.

It is equal to p_3192730 and since 53403073 and 3192730 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53403071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26701536 + 26701537.

It is an arithmetic number, because the mean of its divisors is an integer number (26701537).

Almost surely, 2^53403073 is an apocalyptic number.

It is an amenable number.

53403073 is a deficient number, since it is larger than the sum of its proper divisors (1).

53403073 is an equidigital number, since it uses as much as digits as its factorization.

53403073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 25.

The square root of 53403073 is about 7307.7406221075. The cubic root of 53403073 is about 376.5784089386.

The spelling of 53403073 in words is "fifty-three million, four hundred three thousand, seventy-three".