53219869 has 4 divisors (see below), whose sum is σ = 53234496. Its totient is φ = 53205244.

The previous prime is 53219867. The next prime is 53219879. The reversal of 53219869 is 96891235.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53219869 - 2¹ = 53219867 is a prime.

It is a super-2 number, since 2×53219869² = 5664708912754322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53219863) 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 3 ways as a sum of consecutive naturals, for example, 2892 + ... + 10714.

It is an arithmetic number, because the mean of its divisors is an integer number (13308624).

Almost surely, 2^53219869 is an apocalyptic number.

It is an amenable number.

53219869 is a deficient number, since it is larger than the sum of its proper divisors (14627).

53219869 is an equidigital number, since it uses as much as digits as its factorization.

53219869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14626.

The product of its digits is 116640, while the sum is 43.

The square root of 53219869 is about 7295.1949254287. The cubic root of 53219869 is about 376.1472869667.

The spelling of 53219869 in words is "fifty-three million, two hundred nineteen thousand, eight hundred sixty-nine".