38452221 has 6 divisors (see below), whose sum is σ = 55542110. Its totient is φ = 25634808.

The previous prime is 38452207. The next prime is 38452237. The reversal of 38452221 is 12225483.

It can be written as a sum of positive squares in only one way, i.e., 37380996 + 1071225 = 6114^2 + 1035^2 .

It is not a de Polignac number, because 38452221 - 2²³ = 30063613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38452241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2136226 + ... + 2136243.

Almost surely, 2^38452221 is an apocalyptic number.

It is an amenable number.

38452221 is a deficient number, since it is larger than the sum of its proper divisors (17089889).

38452221 is a wasteful number, since it uses less digits than its factorization.

38452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272475 (or 4272472 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 38452221 is about 6200.9854861949. The cubic root of 38452221 is about 337.5259305180.

The spelling of 38452221 in words is "thirty-eight million, four hundred fifty-two thousand, two hundred twenty-one".