7488521 has 2 divisors, whose sum is σ = 7488522. Its totient is φ = 7488520.

The previous prime is 7488511. The next prime is 7488539. The reversal of 7488521 is 1258847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4682896 + 2805625 = 2164^2 + 1675^2 .

It is an emirp because it is prime and its reverse (1258847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7488521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7488511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744260 + 3744261.

It is an arithmetic number, because the mean of its divisors is an integer number (3744261).

Almost surely, 2^7488521 is an apocalyptic number.

It is an amenable number.

7488521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7488521 is an equidigital number, since it uses as much as digits as its factorization.

7488521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 35.

The square root of 7488521 is about 2736.5162159213. The cubic root of 7488521 is about 195.6434671430.

The spelling of 7488521 in words is "seven million, four hundred eighty-eight thousand, five hundred twenty-one".