53413309 has 4 divisors (see below), whose sum is σ = 53431420. Its totient is φ = 53395200.

The previous prime is 53413301. The next prime is 53413319. The reversal of 53413309 is 90331435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90331435 = 5 ⋅18066287.

It can be written as a sum of positive squares in 2 ways, for example, as 40068900 + 13344409 = 6330^2 + 3653^2 .

It is a cyclic number.

It is not a de Polignac number, because 53413309 - 2³ = 53413301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53413301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (13357855).

Almost surely, 2^53413309 is an apocalyptic number.

It is an amenable number.

53413309 is a deficient number, since it is larger than the sum of its proper divisors (18111).

53413309 is a wasteful number, since it uses less digits than its factorization.

53413309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 53413309 is about 7308.4409418152. The cubic root of 53413309 is about 376.6024675437.

The spelling of 53413309 in words is "fifty-three million, four hundred thirteen thousand, three hundred nine".