20559150 has 96 divisors (see below), whose sum is σ = 57600480. Its totient is φ = 5391360.

The previous prime is 20559127. The next prime is 20559157. The reversal of 20559150 is 5195502.

20559150 is a `hidden beast` number, since 20 + 5 + 591 + 50 = 666.

20559150 is nontrivially palindromic in base 12.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20559157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130872 + ... + 131028.

It is an arithmetic number, because the mean of its divisors is an integer number (600005).

Almost surely, 2^20559150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20559150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28800240).

20559150 is an abundant number, since it is smaller than the sum of its proper divisors (37041330).

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

20559150 is a wasteful number, since it uses less digits than its factorization.

20559150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 20559150 is about 4534.2198888012. The cubic root of 20559150 is about 273.9481582706.

The spelling of 20559150 in words is "twenty million, five hundred fifty-nine thousand, one hundred fifty".