54628561 has 8 divisors (see below), whose sum is σ = 58909760. Its totient is φ = 50358672.

The previous prime is 54628559. The next prime is 54628589. The reversal of 54628561 is 16582645.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54628561 - 2¹ = 54628559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54628561.

It is not an unprimeable number, because it can be changed into a prime (54628061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9100 + ... + 13858.

It is an arithmetic number, because the mean of its divisors is an integer number (7363720).

Almost surely, 2^54628561 is an apocalyptic number.

It is an amenable number.

54628561 is a deficient number, since it is larger than the sum of its proper divisors (4281199).

54628561 is a wasteful number, since it uses less digits than its factorization.

54628561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655.

The product of its digits is 57600, while the sum is 37.

The square root of 54628561 is about 7391.1136508648. The cubic root of 54628561 is about 379.4372116927.

The spelling of 54628561 in words is "fifty-four million, six hundred twenty-eight thousand, five hundred sixty-one".