2037521 has 4 divisors (see below), whose sum is σ = 2042352. Its totient is φ = 2032692.

The previous prime is 2037509. The next prime is 2037523. The reversal of 2037521 is 1257302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1257302 = 2 ⋅628651.

It is a cyclic number.

It is not a de Polignac number, because 2037521 - 2⁶ = 2037457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2037493 and 2037502.

It is not an unprimeable number, because it can be changed into a prime (2037523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1715 + ... + 2648.

It is an arithmetic number, because the mean of its divisors is an integer number (510588).

2^2037521 is an apocalyptic number.

It is an amenable number.

2037521 is a deficient number, since it is larger than the sum of its proper divisors (4831).

2037521 is an equidigital number, since it uses as much as digits as its factorization.

2037521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2037521 is about 1427.4175983222. The cubic root of 2037521 is about 126.7751202567.

The spelling of 2037521 in words is "two million, thirty-seven thousand, five hundred twenty-one".