54535891 has 16 divisors (see below), whose sum is σ = 57882208. Its totient is φ = 51321600.

The previous prime is 54535889. The next prime is 54535903. The reversal of 54535891 is 19853545.

It is a cyclic number.

It is not a de Polignac number, because 54535891 - 2¹ = 54535889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54535801) 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 15 ways as a sum of consecutive naturals, for example, 164596 + ... + 164926.

It is an arithmetic number, because the mean of its divisors is an integer number (3617638).

Almost surely, 2^54535891 is an apocalyptic number.

54535891 is a deficient number, since it is larger than the sum of its proper divisors (3346317).

54535891 is a wasteful number, since it uses less digits than its factorization.

54535891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its digits is 108000, while the sum is 40.

The square root of 54535891 is about 7384.8419752897. The cubic root of 54535891 is about 379.2225355397. Note that the first 3 decimals are identical.

The spelling of 54535891 in words is "fifty-four million, five hundred thirty-five thousand, eight hundred ninety-one".