38252509 has 4 divisors (see below), whose sum is σ = 38276316. Its totient is φ = 38228704.

The previous prime is 38252503. The next prime is 38252521. The reversal of 38252509 is 90525283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90525283 = 739 ⋅122497.

It can be written as a sum of positive squares in 2 ways, for example, as 29192409 + 9060100 = 5403^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 38252509 - 2⁵ = 38252477 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 (38252503) 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 3 ways as a sum of consecutive naturals, for example, 9304 + ... + 12769.

It is an arithmetic number, because the mean of its divisors is an integer number (9569079).

Almost surely, 2^38252509 is an apocalyptic number.

It is an amenable number.

38252509 is a deficient number, since it is larger than the sum of its proper divisors (23807).

38252509 is a wasteful number, since it uses less digits than its factorization.

38252509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23806.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 38252509 is about 6184.8612757280. The cubic root of 38252509 is about 336.9405718980.

The spelling of 38252509 in words is "thirty-eight million, two hundred fifty-two thousand, five hundred nine".