38375521 has 4 divisors (see below), whose sum is σ = 38727700. Its totient is φ = 38023344.

The previous prime is 38375507. The next prime is 38375539. The reversal of 38375521 is 12557383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12557383 = 59 ⋅212837.

It can be written as a sum of positive squares in 2 ways, for example, as 32615521 + 5760000 = 5711^2 + 2400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38375521 is a prime.

It is a super-2 number, since 2×38375521² = 2945361224042882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38375501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175926 + ... + 176143.

It is an arithmetic number, because the mean of its divisors is an integer number (9681925).

Almost surely, 2^38375521 is an apocalyptic number.

It is an amenable number.

38375521 is a deficient number, since it is larger than the sum of its proper divisors (352179).

38375521 is a wasteful number, since it uses less digits than its factorization.

38375521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352178.

The product of its digits is 25200, while the sum is 34.

The square root of 38375521 is about 6194.7978982369. The cubic root of 38375521 is about 337.3013620341.

The spelling of 38375521 in words is "thirty-eight million, three hundred seventy-five thousand, five hundred twenty-one".