53381919 has 12 divisors (see below), whose sum is σ = 74407256. Its totient is φ = 34039632.

The previous prime is 53381903. The next prime is 53381929. The reversal of 53381919 is 91918335.

It is not a de Polignac number, because 53381919 - 2⁴ = 53381903 is a prime.

It is a super-2 number, since 2×53381919² = 5699258552245122, 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 (53381929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15232 + ... + 18405.

Almost surely, 2^53381919 is an apocalyptic number.

53381919 is a deficient number, since it is larger than the sum of its proper divisors (21025337).

53381919 is a wasteful number, since it uses less digits than its factorization.

53381919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33686 (or 33663 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 53381919 is about 7306.2931093681. The cubic root of 53381919 is about 376.5286790180.

The spelling of 53381919 in words is "fifty-three million, three hundred eighty-one thousand, nine hundred nineteen".