38285521 has 2 divisors, whose sum is σ = 38285522. Its totient is φ = 38285520.

The previous prime is 38285509. The next prime is 38285531. The reversal of 38285521 is 12558283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29811600 + 8473921 = 5460^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 38285521 - 2⁷ = 38285393 is a prime.

It is a super-2 number, since 2×38285521² = 2931562236482882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38285531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19142760 + 19142761.

It is an arithmetic number, because the mean of its divisors is an integer number (19142761).

Almost surely, 2^38285521 is an apocalyptic number.

It is an amenable number.

38285521 is a deficient number, since it is larger than the sum of its proper divisors (1).

38285521 is an equidigital number, since it uses as much as digits as its factorization.

38285521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 34.

The square root of 38285521 is about 6187.5294746773. The cubic root of 38285521 is about 337.0374708487.

The spelling of 38285521 in words is "thirty-eight million, two hundred eighty-five thousand, five hundred twenty-one".