2573521 has 8 divisors (see below), whose sum is σ = 2669760. Its totient is φ = 2479152.

The previous prime is 2573509. The next prime is 2573533. The reversal of 2573521 is 1253752.

It is an interprime number because it is at equal distance from previous prime (2573509) and next prime (2573533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2573521 - 2⁷ = 2573393 is a prime.

It is a super-3 number, since 3×2573521³ = 51133368559864499283, which contains 333 as substring.

It is a Duffinian number.

2573521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2573551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2716 + ... + 3538.

It is an arithmetic number, because the mean of its divisors is an integer number (333720).

2^2573521 is an apocalyptic number.

It is an amenable number.

2573521 is a deficient number, since it is larger than the sum of its proper divisors (96239).

2573521 is an equidigital number, since it uses as much as digits as its factorization.

2573521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its digits is 2100, while the sum is 25.

The square root of 2573521 is about 1604.2197480395. The cubic root of 2573521 is about 137.0384923896.

The spelling of 2573521 in words is "two million, five hundred seventy-three thousand, five hundred twenty-one".