54563890 has 16 divisors (see below), whose sum is σ = 99826200. Its totient is φ = 21467520.

The previous prime is 54563881. The next prime is 54563891. The reversal of 54563890 is 9836545.

It can be written as a sum of positive squares in 4 ways, for example, as 38427601 + 16136289 = 6199^2 + 4017^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (54563891) 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, 44115 + ... + 45334.

Almost surely, 2^54563890 is an apocalyptic number.

54563890 is a deficient number, since it is larger than the sum of its proper divisors (45262310).

54563890 is a wasteful number, since it uses less digits than its factorization.

54563890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89517.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 54563890 is about 7386.7374394925. The cubic root of 54563890 is about 379.2874226872.

The spelling of 54563890 in words is "fifty-four million, five hundred sixty-three thousand, eight hundred ninety".