53643879 has 6 divisors (see below), whose sum is σ = 77485616. Its totient is φ = 35762580.

The previous prime is 53643869. The next prime is 53643883. The reversal of 53643879 is 97834635.

53643879 is a `hidden beast` number, since 536 + 43 + 8 + 79 = 666.

53643879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53643879 - 2¹² = 53639783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53643809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2980207 + ... + 2980224.

Almost surely, 2^53643879 is an apocalyptic number.

53643879 is a deficient number, since it is larger than the sum of its proper divisors (23841737).

53643879 is a wasteful number, since it uses less digits than its factorization.

53643879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960437 (or 5960434 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 53643879 is about 7324.1981813711. The cubic root of 53643879 is about 377.1435847708.

The spelling of 53643879 in words is "fifty-three million, six hundred forty-three thousand, eight hundred seventy-nine".