380512505 has 4 divisors (see below), whose sum is σ = 456615012. Its totient is φ = 304410000.

The previous prime is 380512453. The next prime is 380512519. The reversal of 380512505 is 505215083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505215083 = 6367 ⋅79349.

It can be written as a sum of positive squares in 2 ways, for example, as 81775849 + 298736656 = 9043^2 + 17284^2 .

It is not a de Polignac number, because 380512505 - 2⁶ = 380512441 is a prime.

It is a super-2 number, since 2×380512505² = 289579532922750050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38051246 + ... + 38051255.

It is an arithmetic number, because the mean of its divisors is an integer number (114153753).

Almost surely, 2^380512505 is an apocalyptic number.

It is an amenable number.

380512505 is a deficient number, since it is larger than the sum of its proper divisors (76102507).

380512505 is an equidigital number, since it uses as much as digits as its factorization.

380512505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76102506.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 380512505 is about 19506.7297361705. The cubic root of 380512505 is about 724.6411255972.

Adding to 380512505 its reverse (505215083), we get a palindrome (885727588).

The spelling of 380512505 in words is "three hundred eighty million, five hundred twelve thousand, five hundred five".