7875001 has 4 divisors (see below), whose sum is σ = 7880692. Its totient is φ = 7869312.

The previous prime is 7874983. The next prime is 7875013. The reversal of 7875001 is 1005787.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1005787 = 277 ⋅3631.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 2399401 = 2340^2 + 1549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7875001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7875031) 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, 721 + ... + 4033.

It is an arithmetic number, because the mean of its divisors is an integer number (1970173).

Almost surely, 2^7875001 is an apocalyptic number.

It is an amenable number.

7875001 is a deficient number, since it is larger than the sum of its proper divisors (5691).

7875001 is a wasteful number, since it uses less digits than its factorization.

7875001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 7875001 is about 2806.2432182546. The cubic root of 7875001 is about 198.9528688161.

The spelling of 7875001 in words is "seven million, eight hundred seventy-five thousand, one".