7500001 has 4 divisors (see below), whose sum is σ = 7826112. Its totient is φ = 7173892.

The previous prime is 7499981. The next prime is 7500013. The reversal of 7500001 is 1000057.

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: 1000057 = 53 ⋅18869.

It is a cyclic number.

It is not a de Polignac number, because 7500001 - 2⁵ = 7499969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7500061) 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, 163021 + ... + 163066.

It is an arithmetic number, because the mean of its divisors is an integer number (1956528).

Almost surely, 2^7500001 is an apocalyptic number.

It is an amenable number.

7500001 is a deficient number, since it is larger than the sum of its proper divisors (326111).

7500001 is a wasteful number, since it uses less digits than its factorization.

7500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326110.

The product of its (nonzero) digits is 35, while the sum is 13.

The square root of 7500001 is about 2738.6129701000. The cubic root of 7500001 is about 195.7433907581.

Adding to 7500001 its reverse (1000057), we get a palindrome (8500058).

The spelling of 7500001 in words is "seven million, five hundred thousand, one".