2132521 has 4 divisors (see below), whose sum is σ = 2201344. Its totient is φ = 2063700.

The previous prime is 2132513. The next prime is 2132539. The reversal of 2132521 is 1252312.

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 2132521 - 2³ = 2132513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2132495 and 2132504.

It is not an unprimeable number, because it can be changed into a prime (2132551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34365 + ... + 34426.

It is an arithmetic number, because the mean of its divisors is an integer number (550336).

2^2132521 is an apocalyptic number.

It is an amenable number.

2132521 is a deficient number, since it is larger than the sum of its proper divisors (68823).

2132521 is an equidigital number, since it uses as much as digits as its factorization.

2132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68822.

The product of its digits is 120, while the sum is 16.

The square root of 2132521 is about 1460.3153768964. The cubic root of 2132521 is about 128.7155763062.

Adding to 2132521 its reverse (1252312), we get a palindrome (3384833).

The spelling of 2132521 in words is "two million, one hundred thirty-two thousand, five hundred twenty-one".