75709252 has 12 divisors (see below), whose sum is σ = 136072300. Its totient is φ = 36831456.

The previous prime is 75709237. The next prime is 75709259. The reversal of 75709252 is 25290757.

It can be written as a sum of positive squares in 2 ways, for example, as 72999936 + 2709316 = 8544^2 + 1646^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (75709259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255627 + ... + 255922.

Almost surely, 2^75709252 is an apocalyptic number.

It is an amenable number.

75709252 is a deficient number, since it is larger than the sum of its proper divisors (60363048).

75709252 is a wasteful number, since it uses less digits than its factorization.

75709252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511590 (or 511588 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 75709252 is about 8701.1063664341. The cubic root of 75709252 is about 423.0415114621.

The spelling of 75709252 in words is "seventy-five million, seven hundred nine thousand, two hundred fifty-two".