75172232 has 32 divisors (see below), whose sum is σ = 152069400. Its totient is φ = 34704384.

The previous prime is 75172219. The next prime is 75172259. The reversal of 75172232 is 23227157.

It can be written as a sum of positive squares in 4 ways, for example, as 71808676 + 3363556 = 8474^2 + 1834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75172195 and 75172204.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1994 + ... + 12422.

Almost surely, 2^75172232 is an apocalyptic number.

It is an amenable number.

75172232 is an abundant number, since it is smaller than the sum of its proper divisors (76897168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75172232 is a wasteful number, since it uses less digits than its factorization.

75172232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505 (or 10501 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 75172232 is about 8670.1921547334. The cubic root of 75172232 is about 422.0388994038.

Adding to 75172232 its reverse (23227157), we get a palindrome (98399389).

The spelling of 75172232 in words is "seventy-five million, one hundred seventy-two thousand, two hundred thirty-two".