53550000 has 360 divisors, whose sum is σ = 226672992. Its totient is φ = 11520000.

The previous prime is 53549963. The next prime is 53550011. The reversal of 53550000 is 5535.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3149992 + ... + 3150008.

Almost surely, 2^53550000 is an apocalyptic number.

53550000 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 53550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113336496).

53550000 is an abundant number, since it is smaller than the sum of its proper divisors (173122992).

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

53550000 is a wasteful number, since it uses less digits than its factorization.

53550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 53550000 is about 7317.7865505903. The cubic root of 53550000 is about 376.9234506986.

Adding to 53550000 its reverse (5535), we get a palindrome (53555535).

The spelling of 53550000 in words is "fifty-three million, five hundred fifty thousand".