145306177 has 2 divisors, whose sum is σ = 145306178. Its totient is φ = 145306176.

The previous prime is 145306163. The next prime is 145306229. The reversal of 145306177 is 771603541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115756081 + 29550096 = 10759^2 + 5436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145306177 is a prime.

It is a super-2 number, since 2×145306177² = 42227770148710658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145306127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72653088 + 72653089.

It is an arithmetic number, because the mean of its divisors is an integer number (72653089).

Almost surely, 2^145306177 is an apocalyptic number.

It is an amenable number.

145306177 is a deficient number, since it is larger than the sum of its proper divisors (1).

145306177 is an equidigital number, since it uses as much as digits as its factorization.

145306177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 145306177 is about 12054.3011825655. The cubic root of 145306177 is about 525.7283037849.

The spelling of 145306177 in words is "one hundred forty-five million, three hundred six thousand, one hundred seventy-seven".