75215012 has 6 divisors (see below), whose sum is σ = 131626278. Its totient is φ = 37607504.

The previous prime is 75214999. The next prime is 75215017. The reversal of 75215012 is 21051257.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 61716736 + 13498276 = 7856^2 + 3674^2 .

It is not an unprimeable number, because it can be changed into a prime (75215017) 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 as a sum of consecutive naturals, namely, 9401873 + ... + 9401880.

It is an arithmetic number, because the mean of its divisors is an integer number (21937713).

Almost surely, 2^75215012 is an apocalyptic number.

It is an amenable number.

75215012 is a deficient number, since it is larger than the sum of its proper divisors (56411266).

75215012 is a wasteful number, since it uses less digits than its factorization.

75215012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18803757 (or 18803755 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 75215012 is about 8672.6588771841. The cubic root of 75215012 is about 422.1189440327.

Adding to 75215012 its reverse (21051257), we get a palindrome (96266269).

The spelling of 75215012 in words is "seventy-five million, two hundred fifteen thousand, twelve".