53217819 has 12 divisors (see below), whose sum is σ = 77361856. Its totient is φ = 35251632.

The previous prime is 53217811. The next prime is 53217839. The reversal of 53217819 is 91871235.

It is not a de Polignac number, because 53217819 - 2³ = 53217811 is a prime.

It is a super-2 number, since 2×53217819² = 5664272518233522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53217811) 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 in 11 ways as a sum of consecutive naturals, for example, 17419 + ... + 20244.

Almost surely, 2^53217819 is an apocalyptic number.

53217819 is a deficient number, since it is larger than the sum of its proper divisors (24144037).

53217819 is a wasteful number, since it uses less digits than its factorization.

53217819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37826 (or 37823 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 53217819 is about 7295.0544206332. The cubic root of 53217819 is about 376.1424572426.

The spelling of 53217819 in words is "fifty-three million, two hundred seventeen thousand, eight hundred nineteen".