54043661 has 8 divisors (see below), whose sum is σ = 61984704. Its totient is φ = 46157760.

The previous prime is 54043637. The next prime is 54043727. The reversal of 54043661 is 16634045.

It is a happy number.

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 54043661 - 2¹⁴ = 54027277 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 (54043361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11660 + ... + 15621.

It is an arithmetic number, because the mean of its divisors is an integer number (7748088).

Almost surely, 2^54043661 is an apocalyptic number.

It is an amenable number.

54043661 is a deficient number, since it is larger than the sum of its proper divisors (7941043).

54043661 is a wasteful number, since it uses less digits than its factorization.

54043661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27571.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 54043661 is about 7351.4393828692. The cubic root of 54043661 is about 378.0781568090.

The spelling of 54043661 in words is "fifty-four million, forty-three thousand, six hundred sixty-one".