54521887 has 16 divisors (see below), whose sum is σ = 65827840. Its totient is φ = 44113248.

The previous prime is 54521881. The next prime is 54521897. The reversal of 54521887 is 78812545.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54521887 is a prime.

It is a super-3 number, since 3×54521887³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54521881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48253 + ... + 49369.

It is an arithmetic number, because the mean of its divisors is an integer number (4114240).

Almost surely, 2^54521887 is an apocalyptic number.

54521887 is a deficient number, since it is larger than the sum of its proper divisors (11305953).

54521887 is a wasteful number, since it uses less digits than its factorization.

54521887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510.

The product of its digits is 89600, while the sum is 40.

The square root of 54521887 is about 7383.8937560071. The cubic root of 54521887 is about 379.1900732052.

The spelling of 54521887 in words is "fifty-four million, five hundred twenty-one thousand, eight hundred eighty-seven".