38865251 has 2 divisors, whose sum is σ = 38865252. Its totient is φ = 38865250.

The previous prime is 38865223. The next prime is 38865257. The reversal of 38865251 is 15256883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38865251 - 2¹⁴ = 38848867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (38865257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19432625 + 19432626.

It is an arithmetic number, because the mean of its divisors is an integer number (19432626).

Almost surely, 2^38865251 is an apocalyptic number.

38865251 is a deficient number, since it is larger than the sum of its proper divisors (1).

38865251 is an equidigital number, since it uses as much as digits as its factorization.

38865251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 38865251 is about 6234.2001090757. The cubic root of 38865251 is about 338.7301275089.

The spelling of 38865251 in words is "thirty-eight million, eight hundred sixty-five thousand, two hundred fifty-one".