38772251 has 4 divisors (see below), whose sum is σ = 44311152. Its totient is φ = 33233352.

The previous prime is 38772247. The next prime is 38772259. The reversal of 38772251 is 15227783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15227783 = 1087 ⋅14009.

It is a cyclic number.

It is not a de Polignac number, because 38772251 - 2² = 38772247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38772259) 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, 2769440 + ... + 2769453.

It is an arithmetic number, because the mean of its divisors is an integer number (11077788).

Almost surely, 2^38772251 is an apocalyptic number.

38772251 is a deficient number, since it is larger than the sum of its proper divisors (5538901).

38772251 is an equidigital number, since it uses as much as digits as its factorization.

38772251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538900.

The product of its digits is 23520, while the sum is 35.

The square root of 38772251 is about 6226.7367858293. The cubic root of 38772251 is about 338.4597311927.

The spelling of 38772251 in words is "thirty-eight million, seven hundred seventy-two thousand, two hundred fifty-one".