75127972 has 6 divisors (see below), whose sum is σ = 131473958. Its totient is φ = 37563984.

The previous prime is 75127967. The next prime is 75127991. The reversal of 75127972 is 27972157.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50466816 + 24661156 = 7104^2 + 4966^2 .

It is an unprimeable number.

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, 9390993 + ... + 9391000.

Almost surely, 2^75127972 is an apocalyptic number.

It is an amenable number.

75127972 is a deficient number, since it is larger than the sum of its proper divisors (56345986).

75127972 is a wasteful number, since it uses less digits than its factorization.

75127972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18781997 (or 18781995 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 75127972 is about 8667.6393556723. The cubic root of 75127972 is about 421.9560536134.

The spelling of 75127972 in words is "seventy-five million, one hundred twenty-seven thousand, nine hundred seventy-two".