54511661 has 8 divisors (see below), whose sum is σ = 55390944. Its totient is φ = 53637840.

The previous prime is 54511651. The next prime is 54511697. The reversal of 54511661 is 16611545.

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 54511661 - 2¹⁴ = 54495277 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 (54511631) 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, 21806 + ... + 24176.

It is an arithmetic number, because the mean of its divisors is an integer number (6923868).

Almost surely, 2^54511661 is an apocalyptic number.

It is an amenable number.

54511661 is a deficient number, since it is larger than the sum of its proper divisors (879283).

54511661 is a wasteful number, since it uses less digits than its factorization.

54511661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731.

The product of its digits is 3600, while the sum is 29.

The square root of 54511661 is about 7383.2012704517. The cubic root of 54511661 is about 379.1663650496.

The spelling of 54511661 in words is "fifty-four million, five hundred eleven thousand, six hundred sixty-one".