2154530 has 24 divisors (see below), whose sum is σ = 4512348. Its totient is φ = 738528.

The previous prime is 2154499. The next prime is 2154533. The reversal of 2154530 is 354512.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 14161 = 1463^2 + 119^2 .

It is not an unprimeable number, because it can be changed into a prime (2154533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1709 + ... + 2688.

2^2154530 is an apocalyptic number.

2154530 is an abundant number, since it is smaller than the sum of its proper divisors (2357818).

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

2154530 is a wasteful number, since it uses less digits than its factorization.

2154530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418 (or 4411 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2154530 is about 1467.8317342257. The cubic root of 2154530 is about 129.1568710342.

The spelling of 2154530 in words is "two million, one hundred fifty-four thousand, five hundred thirty".