54985661 has 8 divisors (see below), whose sum is σ = 56849664. Its totient is φ = 53127360.

The previous prime is 54985631. The next prime is 54985727. The reversal of 54985661 is 16658945.

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 54985661 - 2⁶ = 54985597 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 (54985631) 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, 28421 + ... + 30293.

It is an arithmetic number, because the mean of its divisors is an integer number (7106208).

Almost surely, 2^54985661 is an apocalyptic number.

It is an amenable number.

54985661 is a deficient number, since it is larger than the sum of its proper divisors (1864003).

54985661 is a wasteful number, since it uses less digits than its factorization.

54985661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its digits is 259200, while the sum is 44.

The square root of 54985661 is about 7415.2316888955. The cubic root of 54985661 is about 380.2621943944.

The spelling of 54985661 in words is "fifty-four million, nine hundred eighty-five thousand, six hundred sixty-one".