53641779 has 4 divisors (see below), whose sum is σ = 71522376. Its totient is φ = 35761184.

The previous prime is 53641739. The next prime is 53641781. The reversal of 53641779 is 97714635.

53641779 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53641779 - 2¹⁵ = 53609011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53641779.

It is not an unprimeable number, because it can be changed into a prime (53641739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8940294 + ... + 8940299.

It is an arithmetic number, because the mean of its divisors is an integer number (17880594).

Almost surely, 2^53641779 is an apocalyptic number.

53641779 is a deficient number, since it is larger than the sum of its proper divisors (17880597).

53641779 is a wasteful number, since it uses less digits than its factorization.

53641779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17880596.

The product of its digits is 158760, while the sum is 42.

The square root of 53641779 is about 7324.0548195655. The cubic root of 53641779 is about 377.1386633528.

The spelling of 53641779 in words is "fifty-three million, six hundred forty-one thousand, seven hundred seventy-nine".