12345505 has 8 divisors (see below), whose sum is σ = 14879592. Its totient is φ = 9833088.

The previous prime is 12345499. The next prime is 12345511. The reversal of 12345505 is 50554321.

It is an interprime number because it is at equal distance from previous prime (12345499) and next prime (12345511).

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 12103441 = 492^2 + 3479^2 .

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 12345505 - 2¹⁵ = 12312737 is a prime.

It is a super-2 number, since 2×12345505² = 304822987410050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12345505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4134 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (1859949).

Almost surely, 2^12345505 is an apocalyptic number.

It is an amenable number.

12345505 is a deficient number, since it is larger than the sum of its proper divisors (2534087).

12345505 is a wasteful number, since it uses less digits than its factorization.

12345505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10835.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 12345505 is about 3513.6170821534. The cubic root of 12345505 is about 231.1193388976.

Adding to 12345505 its reverse (50554321), we get a palindrome (62899826).

The spelling of 12345505 in words is "twelve million, three hundred forty-five thousand, five hundred five".