38912521 has 8 divisors (see below), whose sum is σ = 39346560. Its totient is φ = 38480928.

The previous prime is 38912509. The next prime is 38912543. The reversal of 38912521 is 12521983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38912521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38912561) 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, 59820 + ... + 60466.

It is an arithmetic number, because the mean of its divisors is an integer number (4918320).

Almost surely, 2^38912521 is an apocalyptic number.

It is an amenable number.

38912521 is a deficient number, since it is larger than the sum of its proper divisors (434039).

38912521 is a wasteful number, since it uses less digits than its factorization.

38912521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its digits is 4320, while the sum is 31.

The square root of 38912521 is about 6237.9901410631. The cubic root of 38912521 is about 338.8673991131.

The spelling of 38912521 in words is "thirty-eight million, nine hundred twelve thousand, five hundred twenty-one".