53521884 has 120 divisors (see below), whose sum is σ = 153395088. Its totient is φ = 16174080.

The previous prime is 53521883. The next prime is 53521889. The reversal of 53521884 is 48812535.

It is a happy number.

53521884 is a `hidden beast` number, since 53 + 521 + 8 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521883) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 408499 + ... + 408629.

Almost surely, 2^53521884 is an apocalyptic number.

53521884 is a gapful number since it is divisible by the number (54) 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 53521884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76697544).

53521884 is an abundant number, since it is smaller than the sum of its proper divisors (99873204).

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

53521884 is a wasteful number, since it uses less digits than its factorization.

53521884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 246 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 53521884 is about 7315.8652256585. The cubic root of 53521884 is about 376.8574722672.

The spelling of 53521884 in words is "fifty-three million, five hundred twenty-one thousand, eight hundred eighty-four".