75221576 has 16 divisors (see below), whose sum is σ = 141238140. Its totient is φ = 37558080.

The previous prime is 75221543. The next prime is 75221579. The reversal of 75221576 is 67512257.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65772100 + 9449476 = 8110^2 + 3074^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (75221579) 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 3 ways as a sum of consecutive naturals, for example, 155 + ... + 12266.

Almost surely, 2^75221576 is an apocalyptic number.

It is an amenable number.

75221576 is a deficient number, since it is larger than the sum of its proper divisors (66016564).

75221576 is a wasteful number, since it uses less digits than its factorization.

75221576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184 (or 13180 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 75221576 is about 8673.0372995854. The cubic root of 75221576 is about 422.1312230892.

The spelling of 75221576 in words is "seventy-five million, two hundred twenty-one thousand, five hundred seventy-six".