75055121 has 2 divisors, whose sum is σ = 75055122. Its totient is φ = 75055120.

The previous prime is 75055091. The next prime is 75055151. The reversal of 75055121 is 12155057.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (75055091) and next prime (75055151).

It can be written as a sum of positive squares in only one way, i.e., 65044225 + 10010896 = 8065^2 + 3164^2 .

It is an emirp because it is prime and its reverse (12155057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75055121 - 2²² = 70860817 is a prime.

It is not a weakly prime, because it can be changed into another prime (75055151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37527560 + 37527561.

It is an arithmetic number, because the mean of its divisors is an integer number (37527561).

Almost surely, 2^75055121 is an apocalyptic number.

It is an amenable number.

75055121 is a deficient number, since it is larger than the sum of its proper divisors (1).

75055121 is an equidigital number, since it uses as much as digits as its factorization.

75055121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 75055121 is about 8663.4358657521. The cubic root of 75055121 is about 421.8196203557.

The spelling of 75055121 in words is "seventy-five million, fifty-five thousand, one hundred twenty-one".