2192521 has 4 divisors (see below), whose sum is σ = 2287872. Its totient is φ = 2097172.

The previous prime is 2192471. The next prime is 2192549. The reversal of 2192521 is 1252912.

It is the 605-th star number.

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 2192521 - 2⁹ = 2192009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2192492 and 2192501.

It is not an unprimeable number, because it can be changed into a prime (2192591) 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, 47641 + ... + 47686.

It is an arithmetic number, because the mean of its divisors is an integer number (571968).

2^2192521 is an apocalyptic number.

It is an amenable number.

2192521 is a deficient number, since it is larger than the sum of its proper divisors (95351).

2192521 is an equidigital number, since it uses as much as digits as its factorization.

2192521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95350.

The product of its digits is 360, while the sum is 22.

The square root of 2192521 is about 1480.7163806752. The cubic root of 2192521 is about 129.9115967019.

The spelling of 2192521 in words is "two million, one hundred ninety-two thousand, five hundred twenty-one".