7133530 has 8 divisors (see below), whose sum is σ = 12840372. Its totient is φ = 2853408.

The previous prime is 7133527. The next prime is 7133537. The reversal of 7133530 is 353317.

It can be written as a sum of positive squares in 2 ways, for example, as 6661561 + 471969 = 2581^2 + 687^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7133537) 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 3 ways as a sum of consecutive naturals, for example, 356667 + ... + 356686.

Almost surely, 2^7133530 is an apocalyptic number.

7133530 is a deficient number, since it is larger than the sum of its proper divisors (5706842).

7133530 is a wasteful number, since it uses less digits than its factorization.

7133530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713360.

The product of its (nonzero) digits is 945, while the sum is 22.

The square root of 7133530 is about 2670.8669004651. The cubic root of 7133530 is about 192.5018159159.

Adding to 7133530 its reverse (353317), we get a palindrome (7486847).

The spelling of 7133530 in words is "seven million, one hundred thirty-three thousand, five hundred thirty".