12756001 has 4 divisors (see below), whose sum is σ = 13506372. Its totient is φ = 12005632.

The previous prime is 12755989. The next prime is 12756013. The reversal of 12756001 is 10065721.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12755989) and next prime (12756013).

It can be written as a sum of positive squares in 2 ways, for example, as 3459600 + 9296401 = 1860^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12756001 - 2⁹ = 12755489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12756031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375160 + ... + 375193.

It is an arithmetic number, because the mean of its divisors is an integer number (3376593).

Almost surely, 2^12756001 is an apocalyptic number.

It is an amenable number.

12756001 is a deficient number, since it is larger than the sum of its proper divisors (750371).

12756001 is an equidigital number, since it uses as much as digits as its factorization.

12756001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750370.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 12756001 is about 3571.5544234969. The cubic root of 12756001 is about 233.6530824921.

The spelling of 12756001 in words is "twelve million, seven hundred fifty-six thousand, one".