53564279 has 4 divisors (see below), whose sum is σ = 53582184. Its totient is φ = 53546376.

The previous prime is 53564243. The next prime is 53564281. The reversal of 53564279 is 97246535.

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 53564279 - 2¹⁶ = 53498743 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 (53564219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3257 + ... + 10850.

It is an arithmetic number, because the mean of its divisors is an integer number (13395546).

Almost surely, 2^53564279 is an apocalyptic number.

53564279 is a deficient number, since it is larger than the sum of its proper divisors (17905).

53564279 is a wasteful number, since it uses less digits than its factorization.

53564279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17904.

The product of its digits is 226800, while the sum is 41.

The square root of 53564279 is about 7318.7621221078. The cubic root of 53564279 is about 376.9569496818.

The spelling of 53564279 in words is "fifty-three million, five hundred sixty-four thousand, two hundred seventy-nine".