38503221 has 4 divisors (see below), whose sum is σ = 51337632. Its totient is φ = 25668812.

The previous prime is 38503217. The next prime is 38503237. The reversal of 38503221 is 12230583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12230583 = 3 ⋅4076861.

It is a cyclic number.

It is not a de Polignac number, because 38503221 - 2² = 38503217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38503191 and 38503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38503721) 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, 6417201 + ... + 6417206.

It is an arithmetic number, because the mean of its divisors is an integer number (12834408).

Almost surely, 2^38503221 is an apocalyptic number.

It is an amenable number.

38503221 is a deficient number, since it is larger than the sum of its proper divisors (12834411).

38503221 is a wasteful number, since it uses less digits than its factorization.

38503221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12834410.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 38503221 is about 6205.0963731436. The cubic root of 38503221 is about 337.6750872052.

The spelling of 38503221 in words is "thirty-eight million, five hundred three thousand, two hundred twenty-one".