38791555 has 16 divisors (see below), whose sum is σ = 51105024. Its totient is φ = 28032480.

The previous prime is 38791553. The next prime is 38791567. The reversal of 38791555 is 55519783.

It is not a de Polignac number, because 38791555 - 2¹ = 38791553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38791553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6802 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (3194064).

Almost surely, 2^38791555 is an apocalyptic number.

38791555 is a deficient number, since it is larger than the sum of its proper divisors (12313469).

38791555 is a wasteful number, since it uses less digits than its factorization.

38791555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506.

The product of its digits is 189000, while the sum is 43.

The square root of 38791555 is about 6228.2866825476. The cubic root of 38791555 is about 338.5158928586.

The spelling of 38791555 in words is "thirty-eight million, seven hundred ninety-one thousand, five hundred fifty-five".