7505397 has 6 divisors (see below), whose sum is σ = 10841142. Its totient is φ = 5003592.

The previous prime is 7505389. The next prime is 7505417. The reversal of 7505397 is 7935057.

It can be written as a sum of positive squares in only one way, i.e., 4498641 + 3006756 = 2121^2 + 1734^2 .

It is not a de Polignac number, because 7505397 - 2³ = 7505389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7505357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 416958 + ... + 416975.

It is an arithmetic number, because the mean of its divisors is an integer number (1806857).

Almost surely, 2^7505397 is an apocalyptic number.

It is an amenable number.

7505397 is a deficient number, since it is larger than the sum of its proper divisors (3335745).

7505397 is a wasteful number, since it uses less digits than its factorization.

7505397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833939 (or 833936 counting only the distinct ones).

The product of its (nonzero) digits is 33075, while the sum is 36.

The square root of 7505397 is about 2739.5979632056. The cubic root of 7505397 is about 195.7903231132.

The spelling of 7505397 in words is "seven million, five hundred five thousand, three hundred ninety-seven".