38530521 has 6 divisors (see below), whose sum is σ = 55655210. Its totient is φ = 25687008.

The previous prime is 38530507. The next prime is 38530559. The reversal of 38530521 is 12503583.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 3956121 = 5880^2 + 1989^2 .

It is not a de Polignac number, because 38530521 - 2²³ = 30141913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (38530501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2140576 + ... + 2140593.

Almost surely, 2^38530521 is an apocalyptic number.

It is an amenable number.

38530521 is a deficient number, since it is larger than the sum of its proper divisors (17124689).

38530521 is a wasteful number, since it uses less digits than its factorization.

38530521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281175 (or 4281172 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 38530521 is about 6207.2957880223. The cubic root of 38530521 is about 337.7548757853.

The spelling of 38530521 in words is "thirty-eight million, five hundred thirty thousand, five hundred twenty-one".