7500385 has 8 divisors (see below), whose sum is σ = 9124200. Its totient is φ = 5917824.

The previous prime is 7500373. The next prime is 7500397. The reversal of 7500385 is 5830057.

It is an interprime number because it is at equal distance from previous prime (7500373) and next prime (7500397).

It can be written as a sum of positive squares in 4 ways, for example, as 2954961 + 4545424 = 1719^2 + 2132^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7500385 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9910 + ... + 10639.

It is an arithmetic number, because the mean of its divisors is an integer number (1140525).

Almost surely, 2^7500385 is an apocalyptic number.

It is an amenable number.

7500385 is a deficient number, since it is larger than the sum of its proper divisors (1623815).

7500385 is a wasteful number, since it uses less digits than its factorization.

7500385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20627.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 7500385 is about 2738.6830776853. The cubic root of 7500385 is about 195.7467313879.

The spelling of 7500385 in words is "seven million, five hundred thousand, three hundred eighty-five".