2521473 has 4 divisors (see below), whose sum is σ = 3361968. Its totient is φ = 1680980.

The previous prime is 2521469. The next prime is 2521481. The reversal of 2521473 is 3741252.

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 2521473 - 2² = 2521469 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2521073) 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, 420243 + ... + 420248.

It is an arithmetic number, because the mean of its divisors is an integer number (840492).

2^2521473 is an apocalyptic number.

It is an amenable number.

2521473 is a deficient number, since it is larger than the sum of its proper divisors (840495).

2521473 is an equidigital number, since it uses as much as digits as its factorization.

2521473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840494.

The product of its digits is 1680, while the sum is 24.

The square root of 2521473 is about 1587.9146702515. The cubic root of 2521473 is about 136.1083515136.

The spelling of 2521473 in words is "two million, five hundred twenty-one thousand, four hundred seventy-three".