2070521 has 4 divisors (see below), whose sum is σ = 2137344. Its totient is φ = 2003700.

The previous prime is 2070517. The next prime is 2070527. The reversal of 2070521 is 1250702.

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: 1250702 = 2 ⋅625351.

It is a cyclic number.

It is not a de Polignac number, because 2070521 - 2² = 2070517 is a prime.

It is a super-2 number, since 2×2070521² = 8574114422882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2070521.

It is not an unprimeable number, because it can be changed into a prime (2070527) 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, 33365 + ... + 33426.

It is an arithmetic number, because the mean of its divisors is an integer number (534336).

2^2070521 is an apocalyptic number.

It is an amenable number.

2070521 is a deficient number, since it is larger than the sum of its proper divisors (66823).

2070521 is an equidigital number, since it uses as much as digits as its factorization.

2070521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66822.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 2070521 is about 1438.9305056187. The cubic root of 2070521 is about 127.4558811854.

The spelling of 2070521 in words is "two million, seventy thousand, five hundred twenty-one".