2189577 has 16 divisors (see below), whose sum is σ = 3282048. Its totient is φ = 1288320.

The previous prime is 2189573. The next prime is 2189599. The reversal of 2189577 is 7759812.

It is not a de Polignac number, because 2189577 - 2² = 2189573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2189573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324 + ... + 2117.

It is an arithmetic number, because the mean of its divisors is an integer number (205128).

2^2189577 is an apocalyptic number.

It is an amenable number.

2189577 is a deficient number, since it is larger than the sum of its proper divisors (1092471).

2189577 is a wasteful number, since it uses less digits than its factorization.

2189577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480.

The product of its digits is 35280, while the sum is 39.

The square root of 2189577 is about 1479.7219333375. The cubic root of 2189577 is about 129.8534245414.

It can be divided in two parts, 21 and 89577, that added together give a palindrome (89598).

The spelling of 2189577 in words is "two million, one hundred eighty-nine thousand, five hundred seventy-seven".