145121177 has 2 divisors, whose sum is σ = 145121178. Its totient is φ = 145121176.

The previous prime is 145121161. The next prime is 145121189. The reversal of 145121177 is 771121541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119880601 + 25240576 = 10949^2 + 5024^2 .

It is a cyclic number.

It is not a de Polignac number, because 145121177 - 2⁴ = 145121161 is a prime.

It is not a weakly prime, because it can be changed into another prime (145121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72560588 + 72560589.

It is an arithmetic number, because the mean of its divisors is an integer number (72560589).

Almost surely, 2^145121177 is an apocalyptic number.

It is an amenable number.

145121177 is a deficient number, since it is larger than the sum of its proper divisors (1).

145121177 is an equidigital number, since it uses as much as digits as its factorization.

145121177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 29.

The square root of 145121177 is about 12046.6251290559. The cubic root of 145121177 is about 525.5050945504.

The spelling of 145121177 in words is "one hundred forty-five million, one hundred twenty-one thousand, one hundred seventy-seven".