12976555 has 4 divisors (see below), whose sum is σ = 15571872. Its totient is φ = 10381240.

The previous prime is 12976517. The next prime is 12976567. The reversal of 12976555 is 55567921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55567921 = 307 ⋅181003.

It is not a de Polignac number, because 12976555 - 2²¹ = 10879403 is a prime.

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, 1297651 + ... + 1297660.

It is an arithmetic number, because the mean of its divisors is an integer number (3892968).

Almost surely, 2^12976555 is an apocalyptic number.

12976555 is a deficient number, since it is larger than the sum of its proper divisors (2595317).

12976555 is an equidigital number, since it uses as much as digits as its factorization.

12976555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595316.

The product of its digits is 94500, while the sum is 40.

The square root of 12976555 is about 3602.2985717455. The cubic root of 12976555 is about 234.9920323238.

It can be divided in two parts, 12976 and 555, that added together give a palindrome (13531).

The spelling of 12976555 in words is "twelve million, nine hundred seventy-six thousand, five hundred fifty-five".