2145133 has 4 divisors (see below), whose sum is σ = 2156220. Its totient is φ = 2134048.

The previous prime is 2145131. The next prime is 2145137. The reversal of 2145133 is 3315412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 1036324 = 1053^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145133 - 2¹ = 2145131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5248 + ... + 5641.

It is an arithmetic number, because the mean of its divisors is an integer number (539055).

2^2145133 is an apocalyptic number.

It is an amenable number.

2145133 is a deficient number, since it is larger than the sum of its proper divisors (11087).

2145133 is a wasteful number, since it uses less digits than its factorization.

2145133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086.

The product of its digits is 360, while the sum is 19.

The square root of 2145133 is about 1464.6272563352. The cubic root of 2145133 is about 128.9688244677.

It can be divided in two parts, 2145 and 133, that added together give a triangular number (2278 = T₆₇).

The spelling of 2145133 in words is "two million, one hundred forty-five thousand, one hundred thirty-three".