75539972 has 18 divisors (see below), whose sum is σ = 139521438. Its totient is φ = 35781408.

The previous prime is 75539957. The next prime is 75539987. The reversal of 75539972 is 27993557.

It is an interprime number because it is at equal distance from previous prime (75539957) and next prime (75539987).

It can be written as a sum of positive squares in only one way, i.e., 74407876 + 1132096 = 8626^2 + 1064^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24713 + ... + 27600.

It is an arithmetic number, because the mean of its divisors is an integer number (7751191).

Almost surely, 2^75539972 is an apocalyptic number.

It is an amenable number.

75539972 is a deficient number, since it is larger than the sum of its proper divisors (63981466).

75539972 is a wasteful number, since it uses less digits than its factorization.

75539972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52355 (or 52334 counting only the distinct ones).

The product of its digits is 595350, while the sum is 47.

The square root of 75539972 is about 8691.3734242639. The cubic root of 75539972 is about 422.7259802033.

The spelling of 75539972 in words is "seventy-five million, five hundred thirty-nine thousand, nine hundred seventy-two".