54521500 has 96 divisors (see below), whose sum is σ = 135862272. Its totient is φ = 18920000.

The previous prime is 54521497. The next prime is 54521501. The reversal of 54521500 is 512545.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54521501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126285 + ... + 126715.

It is an arithmetic number, because the mean of its divisors is an integer number (1415232).

Almost surely, 2^54521500 is an apocalyptic number.

54521500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54521500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67931136).

54521500 is an abundant number, since it is smaller than the sum of its proper divisors (81340772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54521500 is a wasteful number, since it uses less digits than its factorization.

54521500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 54521500 is about 7383.8675502747. The cubic root of 54521500 is about 379.1891760309.

The spelling of 54521500 in words is "fifty-four million, five hundred twenty-one thousand, five hundred".