38145505 has 8 divisors (see below), whose sum is σ = 46067112. Its totient is φ = 30321408.

The previous prime is 38145479. The next prime is 38145509. The reversal of 38145505 is 50554183.

It can be written as a sum of positive squares in 4 ways, for example, as 2719201 + 35426304 = 1649^2 + 5952^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38145505 - 2⁵ = 38145473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38145509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23512 + ... + 25081.

It is an arithmetic number, because the mean of its divisors is an integer number (5758389).

Almost surely, 2^38145505 is an apocalyptic number.

It is an amenable number.

38145505 is a deficient number, since it is larger than the sum of its proper divisors (7921607).

38145505 is a wasteful number, since it uses less digits than its factorization.

38145505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48755.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 38145505 is about 6176.2047407773. The cubic root of 38145505 is about 336.6261031197.

Adding to 38145505 its reverse (50554183), we get a palindrome (88699688).

The spelling of 38145505 in words is "thirty-eight million, one hundred forty-five thousand, five hundred five".