2528121 has 16 divisors (see below), whose sum is σ = 3758400. Its totient is φ = 1502208.

The previous prime is 2528077. The next prime is 2528129. The reversal of 2528121 is 1218252.

It is a happy number.

It is not a de Polignac number, because 2528121 - 2¹⁰ = 2527097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2528129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (234900).

2^2528121 is an apocalyptic number.

It is an amenable number.

2528121 is a deficient number, since it is larger than the sum of its proper divisors (1230279).

2528121 is a wasteful number, since it uses less digits than its factorization.

2528121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648.

The product of its digits is 320, while the sum is 21.

The square root of 2528121 is about 1590.0066037599. The cubic root of 2528121 is about 136.2278655512.

Subtracting from 2528121 its sum of digits (21), we obtain a square (2528100 = 1590²).

The spelling of 2528121 in words is "two million, five hundred twenty-eight thousand, one hundred twenty-one".