2653921 has 8 divisors (see below), whose sum is σ = 2838240. Its totient is φ = 2472768.

The previous prime is 2653913. The next prime is 2653951. The reversal of 2653921 is 1293562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2653921 - 2³ = 2653913 is a prime.

It is a Duffinian number.

2653921 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2653921.

It is not an unprimeable number, because it can be changed into a prime (2653951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (354780).

2^2653921 is an apocalyptic number.

It is an amenable number.

2653921 is a deficient number, since it is larger than the sum of its proper divisors (184319).

2653921 is a wasteful number, since it uses less digits than its factorization.

2653921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its digits is 3240, while the sum is 28.

The square root of 2653921 is about 1629.0859400289. The cubic root of 2653921 is about 138.4509681469.

It can be divided in two parts, 265 and 3921, that added together give a triangular number (4186 = T₉₁).

The spelling of 2653921 in words is "two million, six hundred fifty-three thousand, nine hundred twenty-one".