7356521 has 2 divisors, whose sum is σ = 7356522. Its totient is φ = 7356520.

The previous prime is 7356511. The next prime is 7356541. The reversal of 7356521 is 1256537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 3312400 = 2011^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 7356521 - 2⁶ = 7356457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7356511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3678260 + 3678261.

It is an arithmetic number, because the mean of its divisors is an integer number (3678261).

Almost surely, 2^7356521 is an apocalyptic number.

It is an amenable number.

7356521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7356521 is an equidigital number, since it uses as much as digits as its factorization.

7356521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 29.

The square root of 7356521 is about 2712.2907292545. The cubic root of 7356521 is about 194.4871115318.

The spelling of 7356521 in words is "seven million, three hundred fifty-six thousand, five hundred twenty-one".