54780559 has 4 divisors (see below), whose sum is σ = 54804600. Its totient is φ = 54756520.

The previous prime is 54780529. The next prime is 54780569. The reversal of 54780559 is 95508745.

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 54780559 - 2⁵ = 54780527 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 (54780529) 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, 8197 + ... + 13294.

It is an arithmetic number, because the mean of its divisors is an integer number (13701150).

Almost surely, 2^54780559 is an apocalyptic number.

54780559 is a deficient number, since it is larger than the sum of its proper divisors (24041).

54780559 is a wasteful number, since it uses less digits than its factorization.

54780559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24040.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 54780559 is about 7401.3889912637. The cubic root of 54780559 is about 379.7887999982.

The spelling of 54780559 in words is "fifty-four million, seven hundred eighty thousand, five hundred fifty-nine".