54661605 has 16 divisors (see below), whose sum is σ = 87986304. Its totient is φ = 28976960.

The previous prime is 54661589. The next prime is 54661619. The reversal of 54661605 is 50616645.

It is not a de Polignac number, because 54661605 - 2⁴ = 54661589 is a prime.

It is a super-2 number, since 2×54661605² = 5975782122352050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8406 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (5499144).

Almost surely, 2^54661605 is an apocalyptic number.

It is an amenable number.

54661605 is a deficient number, since it is larger than the sum of its proper divisors (33324699).

54661605 is a wasteful number, since it uses less digits than its factorization.

54661605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21996.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 54661605 is about 7393.3487000141. The cubic root of 54661605 is about 379.5137015715.

The spelling of 54661605 in words is "fifty-four million, six hundred sixty-one thousand, six hundred five".