2652921 has 12 divisors (see below), whose sum is σ = 3849300.
Its totient is φ = 1760640.
The previous prime is 2652911. The next prime is 2652941. The reversal of 2652921 is 1292562.
2652921 is a `hidden beast` number, since 2 + 652 + 9 + 2 + 1 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 518400 = 1461^2 + 720^2
It is not a de Polignac number, because 2652921 - 29 = 2652409 is a prime.
2652921 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (2652911) 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 11 ways as a sum of consecutive naturals, for example, 2005 + ... + 3053.
It is an arithmetic number, because the mean of its divisors is an integer number (320775).
22652921 is an apocalyptic number.
It is an amenable number.
2652921 is a deficient number, since it is larger than the sum of its proper divisors (1196379).
2652921 is a wasteful number, since it uses less digits than its factorization.
2652921 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1336 (or 1333 counting only the distinct ones).
The product of its digits is 2160, while the sum is 27.
The square root of 2652921 is about 1628.7789905325.
The cubic root of 2652921 is about 138.4335764760.
The spelling of 2652921 in words is "two million, six hundred fifty-two thousand, nine hundred twenty-one".