38502561 has 4 divisors (see below), whose sum is σ = 51336752. Its totient is φ = 25668372.

The previous prime is 38502553. The next prime is 38502571. The reversal of 38502561 is 16520583.

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.

It is not a de Polignac number, because 38502561 - 2³ = 38502553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38502571) 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, 6417091 + ... + 6417096.

It is an arithmetic number, because the mean of its divisors is an integer number (12834188).

Almost surely, 2^38502561 is an apocalyptic number.

It is an amenable number.

38502561 is a deficient number, since it is larger than the sum of its proper divisors (12834191).

38502561 is a wasteful number, since it uses less digits than its factorization.

38502561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834190.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 38502561 is about 6205.0431908247. The cubic root of 38502561 is about 337.6731577837.

The spelling of 38502561 in words is "thirty-eight million, five hundred two thousand, five hundred sixty-one".