53821019 has 8 divisors (see below), whose sum is σ = 61782528. Its totient is φ = 45927720.

The previous prime is 53821003. The next prime is 53821049. The reversal of 53821019 is 91012835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53821019 - 2⁴ = 53821003 is a prime.

It is a super-2 number, since 2×53821019² = 5793404172396722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53820982 and 53821000.

It is not an unprimeable number, because it can be changed into a prime (53821049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15347 + ... + 18524.

It is an arithmetic number, because the mean of its divisors is an integer number (7722816).

Almost surely, 2^53821019 is an apocalyptic number.

53821019 is a deficient number, since it is larger than the sum of its proper divisors (7961509).

53821019 is a wasteful number, since it uses less digits than its factorization.

53821019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34105.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 53821019 is about 7336.2810060684. The cubic root of 53821019 is about 377.5582565824.

The spelling of 53821019 in words is "fifty-three million, eight hundred twenty-one thousand, nineteen".