145737161 has 2 divisors, whose sum is σ = 145737162. Its totient is φ = 145737160.

The previous prime is 145737133. The next prime is 145737173. The reversal of 145737161 is 161737541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98883136 + 46854025 = 9944^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 145737161 - 2¹⁴ = 145720777 is a prime.

It is equal to p_8217782 and since 145737161 and 8217782 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (145437161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72868580 + 72868581.

It is an arithmetic number, because the mean of its divisors is an integer number (72868581).

Almost surely, 2^145737161 is an apocalyptic number.

It is an amenable number.

145737161 is a deficient number, since it is larger than the sum of its proper divisors (1).

145737161 is an equidigital number, since it uses as much as digits as its factorization.

145737161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 145737161 is about 12072.1647188895. The cubic root of 145737161 is about 526.2475678766.

The spelling of 145737161 in words is "one hundred forty-five million, seven hundred thirty-seven thousand, one hundred sixty-one".