7394521 has 2 divisors, whose sum is σ = 7394522. Its totient is φ = 7394520.

The previous prime is 7394509. The next prime is 7394531. The reversal of 7394521 is 1254937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7080921 + 313600 = 2661^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 7394521 - 2⁵ = 7394489 is a prime.

It is not a weakly prime, because it can be changed into another prime (7394531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3697260 + 3697261.

It is an arithmetic number, because the mean of its divisors is an integer number (3697261).

Almost surely, 2^7394521 is an apocalyptic number.

It is an amenable number.

7394521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7394521 is an equidigital number, since it uses as much as digits as its factorization.

7394521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 7394521 is about 2719.2868550412. The cubic root of 7394521 is about 194.8214100152.

The spelling of 7394521 in words is "seven million, three hundred ninety-four thousand, five hundred twenty-one".