12540355 has 8 divisors (see below), whose sum is σ = 15083712. Its totient is φ = 10008768.

The previous prime is 12540347. The next prime is 12540371. The reversal of 12540355 is 55304521.

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 12540355 - 2³ = 12540347 is a prime.

It is a Duffinian number.

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, 394 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (1885464).

Almost surely, 2^12540355 is an apocalyptic number.

12540355 is a deficient number, since it is larger than the sum of its proper divisors (2543357).

12540355 is an equidigital number, since it uses as much as digits as its factorization.

12540355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885.

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

The square root of 12540355 is about 3541.2363660168. The cubic root of 12540355 is about 232.3289218222.

Adding to 12540355 its reverse (55304521), we get a palindrome (67844876).

The spelling of 12540355 in words is "twelve million, five hundred forty thousand, three hundred fifty-five".