53821519 has 2 divisors, whose sum is σ = 53821520. Its totient is φ = 53821518.

The previous prime is 53821501. The next prime is 53821529. The reversal of 53821519 is 91512835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53821519 - 2¹³ = 53813327 is a prime.

It is a super-2 number, since 2×53821519² = 5793511814934722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53821529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26910759 + 26910760.

It is an arithmetic number, because the mean of its divisors is an integer number (26910760).

Almost surely, 2^53821519 is an apocalyptic number.

53821519 is a deficient number, since it is larger than the sum of its proper divisors (1).

53821519 is an equidigital number, since it uses as much as digits as its factorization.

53821519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 53821519 is about 7336.3150832008. The cubic root of 53821519 is about 377.5594257572.

The spelling of 53821519 in words is "fifty-three million, eight hundred twenty-one thousand, five hundred nineteen".