2438521 has 2 divisors, whose sum is σ = 2438522. Its totient is φ = 2438520.

The previous prime is 2438509. The next prime is 2438537. The reversal of 2438521 is 1258342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2325625 + 112896 = 1525^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2438521 - 2⁵ = 2438489 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4⁴ + 3¹¹ + 8⁵ + 5³ + 2²¹ + 1 .

2438521 is a lucky number.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2438591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219260 + 1219261.

It is an arithmetic number, because the mean of its divisors is an integer number (1219261).

2^2438521 is an apocalyptic number.

It is an amenable number.

2438521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2438521 is an equidigital number, since it uses as much as digits as its factorization.

2438521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 2438521 is about 1561.5764470560. The cubic root of 2438521 is about 134.5991033119.

The spelling of 2438521 in words is "two million, four hundred thirty-eight thousand, five hundred twenty-one".