53786643 has 16 divisors (see below), whose sum is σ = 74406912. Its totient is φ = 34524000.

The previous prime is 53786617. The next prime is 53786647. The reversal of 53786643 is 34668735.

It is not a de Polignac number, because 53786643 - 2²² = 49592339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53786595 and 53786604.

It is not an unprimeable number, because it can be changed into a prime (53786647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18253 + ... + 20993.

It is an arithmetic number, because the mean of its divisors is an integer number (4650432).

Almost surely, 2^53786643 is an apocalyptic number.

53786643 is a deficient number, since it is larger than the sum of its proper divisors (20620269).

53786643 is a wasteful number, since it uses less digits than its factorization.

53786643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986.

The product of its digits is 362880, while the sum is 42.

The square root of 53786643 is about 7333.9377553944. The cubic root of 53786643 is about 377.4778561050.

It can be divided in two parts, 5378 and 6643, that added together give a palindrome (12021).

The spelling of 53786643 in words is "fifty-three million, seven hundred eighty-six thousand, six hundred forty-three".