75262221 has 12 divisors (see below), whose sum is σ = 112461180. Its totient is φ = 48444480.

The previous prime is 75262219. The next prime is 75262259. The reversal of 75262221 is 12226257.

It can be written as a sum of positive squares in 2 ways, for example, as 56025225 + 19236996 = 7485^2 + 4386^2 .

It is not a de Polignac number, because 75262221 - 2¹ = 75262219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75262261) 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 in 11 ways as a sum of consecutive naturals, for example, 143920 + ... + 144441.

It is an arithmetic number, because the mean of its divisors is an integer number (9371765).

Almost surely, 2^75262221 is an apocalyptic number.

It is an amenable number.

75262221 is a deficient number, since it is larger than the sum of its proper divisors (37198959).

75262221 is a wasteful number, since it uses less digits than its factorization.

75262221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288396 (or 288393 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 75262221 is about 8675.3801645807. The cubic root of 75262221 is about 422.2072404374.

Adding to 75262221 its reverse (12226257), we get a palindrome (87488478).

The spelling of 75262221 in words is "seventy-five million, two hundred sixty-two thousand, two hundred twenty-one".