54521811 has 12 divisors (see below), whose sum is σ = 82898920. Its totient is φ = 34434720.

The previous prime is 54521791. The next prime is 54521813. The reversal of 54521811 is 11812545.

It is not a de Polignac number, because 54521811 - 2¹¹ = 54519763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54521813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159250 + ... + 159591.

Almost surely, 2^54521811 is an apocalyptic number.

54521811 is a deficient number, since it is larger than the sum of its proper divisors (28377109).

54521811 is a wasteful number, since it uses less digits than its factorization.

54521811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318866 (or 318863 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 54521811 is about 7383.8886096690. Note that the first 3 decimals coincide. The cubic root of 54521811 is about 379.1898970163.

The spelling of 54521811 in words is "fifty-four million, five hundred twenty-one thousand, eight hundred eleven".