7850001 has 4 divisors (see below), whose sum is σ = 10466672. Its totient is φ = 5233332.

The previous prime is 7849999. The next prime is 7850033. The reversal of 7850001 is 1000587.

It is a happy number.

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.

It is not a de Polignac number, because 7850001 - 2¹ = 7849999 is a prime.

It is a Duffinian number.

7850001 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7850001.

It is not an unprimeable number, because it can be changed into a prime (7850041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308331 + ... + 1308336.

It is an arithmetic number, because the mean of its divisors is an integer number (2616668).

Almost surely, 2^7850001 is an apocalyptic number.

It is an amenable number.

7850001 is a deficient number, since it is larger than the sum of its proper divisors (2616671).

7850001 is a wasteful number, since it uses less digits than its factorization.

7850001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616670.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 7850001 is about 2801.7853236820. The cubic root of 7850001 is about 198.7421135275.

Adding to 7850001 its reverse (1000587), we get a palindrome (8850588).

The spelling of 7850001 in words is "seven million, eight hundred fifty thousand, one".