2923521 has 4 divisors (see below), whose sum is σ = 3898032. Its totient is φ = 1949012.

The previous prime is 2923513. The next prime is 2923523. The reversal of 2923521 is 1253292.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2923521 - 2³ = 2923513 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2923491 and 2923500.

It is not an unprimeable number, because it can be changed into a prime (2923523) 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, 487251 + ... + 487256.

It is an arithmetic number, because the mean of its divisors is an integer number (974508).

2^2923521 is an apocalyptic number.

It is an amenable number.

2923521 is a deficient number, since it is larger than the sum of its proper divisors (974511).

2923521 is an equidigital number, since it uses as much as digits as its factorization.

2923521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974510.

The product of its digits is 1080, while the sum is 24.

The square root of 2923521 is about 1709.8306933729. The cubic root of 2923521 is about 142.9888168346.

The spelling of 2923521 in words is "two million, nine hundred twenty-three thousand, five hundred twenty-one".