2159550 has 36 divisors (see below), whose sum is σ = 5803200. Its totient is φ = 575760.

The previous prime is 2159537. The next prime is 2159551. The reversal of 2159550 is 559512.

2159550 is a `hidden beast` number, since 21 + 595 + 50 = 666.

It is an Ulam number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1950 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (161200).

2^2159550 is an apocalyptic number.

2159550 is an abundant number, since it is smaller than the sum of its proper divisors (3643650).

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

2159550 is a wasteful number, since it uses less digits than its factorization.

2159550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4809 counting only the distinct ones).

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

The square root of 2159550 is about 1469.5407445866. The cubic root of 2159550 is about 129.2571039672.

The spelling of 2159550 in words is "two million, one hundred fifty-nine thousand, five hundred fifty".