2521648 has 20 divisors (see below), whose sum is σ = 4919328. Its totient is φ = 1252160.

The previous prime is 2521643. The next prime is 2521681. The reversal of 2521648 is 8461252.

It is not an unprimeable number, because it can be changed into a prime (2521643) 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, 2313 + ... + 3223.

2^2521648 is an apocalyptic number.

It is an amenable number.

2521648 is a deficient number, since it is larger than the sum of its proper divisors (2397680).

2521648 is a wasteful number, since it uses less digits than its factorization.

2521648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1086 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2521648 is about 1587.9697730121. The cubic root of 2521648 is about 136.1115002565. Note that the first 3 decimals are identical.

The spelling of 2521648 in words is "two million, five hundred twenty-one thousand, six hundred forty-eight".