38006521 has 8 divisors (see below), whose sum is σ = 43525440. Its totient is φ = 32509968.

The previous prime is 38006483. The next prime is 38006537. The reversal of 38006521 is 12560083.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38006521 - 2¹³ = 37998329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38006581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771 + ... + 8896.

It is an arithmetic number, because the mean of its divisors is an integer number (5440680).

Almost surely, 2^38006521 is an apocalyptic number.

It is an amenable number.

38006521 is a deficient number, since it is larger than the sum of its proper divisors (5518919).

38006521 is a wasteful number, since it uses less digits than its factorization.

38006521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11183.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 38006521 is about 6164.9429032230. The cubic root of 38006521 is about 336.2167706691.

The spelling of 38006521 in words is "thirty-eight million, six thousand, five hundred twenty-one".