53813519 has 4 divisors (see below), whose sum is σ = 53828400. Its totient is φ = 53798640.

The previous prime is 53813509. The next prime is 53813549. The reversal of 53813519 is 91531835.

It is a semiprime because it is the product of two primes, 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 53813519 - 2¹⁶ = 53747983 is a prime.

It is a super-2 number, since 2×53813519² = 5791789654326722, 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 (53813509) 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, 1859 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (13457100).

Almost surely, 2^53813519 is an apocalyptic number.

53813519 is a deficient number, since it is larger than the sum of its proper divisors (14881).

53813519 is an equidigital number, since it uses as much as digits as its factorization.

53813519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880.

The product of its digits is 16200, while the sum is 35.

The square root of 53813519 is about 7335.7698300860. The cubic root of 53813519 is about 377.5407180908.

The spelling of 53813519 in words is "fifty-three million, eight hundred thirteen thousand, five hundred nineteen".