75271121 has 16 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 68190720.

The previous prime is 75271117. The next prime is 75271129. The reversal of 75271121 is 12117257.

It is a cyclic number.

It is not a de Polignac number, because 75271121 - 2² = 75271117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75271129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54380 + ... + 55746.

It is an arithmetic number, because the mean of its divisors is an integer number (5171040).

Almost surely, 2^75271121 is an apocalyptic number.

It is an amenable number.

75271121 is a deficient number, since it is larger than the sum of its proper divisors (7465519).

75271121 is a wasteful number, since it uses less digits than its factorization.

75271121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504.

The product of its digits is 980, while the sum is 26.

The square root of 75271121 is about 8675.8930952381. The cubic root of 75271121 is about 422.2238822367.

Adding to 75271121 its reverse (12117257), we get a palindrome (87388378).

The spelling of 75271121 in words is "seventy-five million, two hundred seventy-one thousand, one hundred twenty-one".