75245530 has 8 divisors (see below), whose sum is σ = 135441972. Its totient is φ = 30098208.

The previous prime is 75245509. The next prime is 75245539. The reversal of 75245530 is 3554257.

It can be written as a sum of positive squares in 2 ways, for example, as 74149321 + 1096209 = 8611^2 + 1047^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 75245492 and 75245501.

It is not an unprimeable number, because it can be changed into a prime (75245539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3762267 + ... + 3762286.

Almost surely, 2^75245530 is an apocalyptic number.

75245530 is a deficient number, since it is larger than the sum of its proper divisors (60196442).

75245530 is a wasteful number, since it uses less digits than its factorization.

75245530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524560.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 75245530 is about 8674.4181361057. The cubic root of 75245530 is about 422.1760269815.

Adding to 75245530 its reverse (3554257), we get a palindrome (78799787).

The spelling of 75245530 in words is "seventy-five million, two hundred forty-five thousand, five hundred thirty".