54550621 has 8 divisors (see below), whose sum is σ = 55691064. Its totient is φ = 53414400.

The previous prime is 54550619. The next prime is 54550631. The reversal of 54550621 is 12605545.

It can be written as a sum of positive squares in 4 ways, for example, as 7901721 + 46648900 = 2811^2 + 6830^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 54550621 - 2¹ = 54550619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54550621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54550631) 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, 44821 + ... + 46021.

It is an arithmetic number, because the mean of its divisors is an integer number (6961383).

Almost surely, 2^54550621 is an apocalyptic number.

It is an amenable number.

54550621 is a deficient number, since it is larger than the sum of its proper divisors (1140443).

54550621 is a wasteful number, since it uses less digits than its factorization.

54550621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 54550621 is about 7385.8392211041. The cubic root of 54550621 is about 379.2566748011.

The spelling of 54550621 in words is "fifty-four million, five hundred fifty thousand, six hundred twenty-one".