75222001 has 4 divisors (see below), whose sum is σ = 75240000. Its totient is φ = 75204004.

The previous prime is 75221989. The next prime is 75222011. The reversal of 75222001 is 10022257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10022257 = 7 ⋅1431751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75222001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75222001.

It is not an unprimeable number, because it can be changed into a prime (75222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900 + ... + 12298.

It is an arithmetic number, because the mean of its divisors is an integer number (18810000).

Almost surely, 2^75222001 is an apocalyptic number.

It is an amenable number.

75222001 is a deficient number, since it is larger than the sum of its proper divisors (17999).

75222001 is a wasteful number, since it uses less digits than its factorization.

75222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17998.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 75222001 is about 8673.0618007714. The cubic root of 75222001 is about 422.1320180979.

Adding to 75222001 its reverse (10022257), we get a palindrome (85244258).

The spelling of 75222001 in words is "seventy-five million, two hundred twenty-two thousand, one".