53979559 has 4 divisors (see below), whose sum is σ = 55438504. Its totient is φ = 52520616.

The previous prime is 53979557. The next prime is 53979581. The reversal of 53979559 is 95597935.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95597935 = 5 ⋅19119587.

It is a cyclic number.

It is not a de Polignac number, because 53979559 - 2¹ = 53979557 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 (53979553) 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, 729417 + ... + 729490.

It is an arithmetic number, because the mean of its divisors is an integer number (13859626).

Almost surely, 2^53979559 is an apocalyptic number.

53979559 is a deficient number, since it is larger than the sum of its proper divisors (1458945).

53979559 is a wasteful number, since it uses less digits than its factorization.

53979559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458944.

The product of its digits is 1913625, while the sum is 52.

The square root of 53979559 is about 7347.0782628199. The cubic root of 53979559 is about 377.9286162713.

The spelling of 53979559 in words is "fifty-three million, nine hundred seventy-nine thousand, five hundred fifty-nine".