12750001 has 4 divisors (see below), whose sum is σ = 13909104. Its totient is φ = 11590900.

The previous prime is 12749953. The next prime is 12750011. The reversal of 12750001 is 10005721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10005721 = 11 ⋅909611.

It is a cyclic number.

It is not a de Polignac number, because 12750001 - 2⁹ = 12749489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12750011) 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, 579535 + ... + 579556.

It is an arithmetic number, because the mean of its divisors is an integer number (3477276).

Almost surely, 2^12750001 is an apocalyptic number.

12750001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12750001 is a deficient number, since it is larger than the sum of its proper divisors (1159103).

12750001 is a wasteful number, since it uses less digits than its factorization.

12750001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159102.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 12750001 is about 3570.7143542994. The cubic root of 12750001 is about 233.6164425254.

Adding to 12750001 its reverse (10005721), we get a palindrome (22755722).

The spelling of 12750001 in words is "twelve million, seven hundred fifty thousand, one".