53784005 has 64 divisors (see below), whose sum is σ = 80994816. Its totient is φ = 33792000.

The previous prime is 53784001. The next prime is 53784011. The reversal of 53784005 is 50048735.

It is a happy number.

It is not a de Polignac number, because 53784005 - 2² = 53784001 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53784001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 881675 + ... + 881735.

It is an arithmetic number, because the mean of its divisors is an integer number (1265544).

Almost surely, 2^53784005 is an apocalyptic number.

53784005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53784005 is a deficient number, since it is larger than the sum of its proper divisors (27210811).

53784005 is a wasteful number, since it uses less digits than its factorization.

53784005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 53784005 is about 7333.7579043762. The cubic root of 53784005 is about 377.4716847905.

The spelling of 53784005 in words is "fifty-three million, seven hundred eighty-four thousand, five".