7520345 has 8 divisors (see below), whose sum is σ = 10313664. Its totient is φ = 5156784.

The previous prime is 7520311. The next prime is 7520347. The reversal of 7520345 is 5430257.

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

It is a cyclic number.

It is not a de Polignac number, because 7520345 - 2¹⁴ = 7503961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7520347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107399 + ... + 107468.

It is an arithmetic number, because the mean of its divisors is an integer number (1289208).

Almost surely, 2^7520345 is an apocalyptic number.

It is an amenable number.

7520345 is a deficient number, since it is larger than the sum of its proper divisors (2793319).

7520345 is a wasteful number, since it uses less digits than its factorization.

7520345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214879.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 7520345 is about 2742.3247437165. The cubic root of 7520345 is about 195.9202177718.

The spelling of 7520345 in words is "seven million, five hundred twenty thousand, three hundred forty-five".