145413161 has 2 divisors, whose sum is σ = 145413162. Its totient is φ = 145413160.

The previous prime is 145413133. The next prime is 145413173. The reversal of 145413161 is 161314541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91317136 + 54096025 = 9556^2 + 7355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145413161 is a prime.

It is a super-2 number, since 2×145413161² = 42289974784023842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145413161.

It is not a weakly prime, because it can be changed into another prime (145413131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72706580 + 72706581.

It is an arithmetic number, because the mean of its divisors is an integer number (72706581).

Almost surely, 2^145413161 is an apocalyptic number.

It is an amenable number.

145413161 is a deficient number, since it is larger than the sum of its proper divisors (1).

145413161 is an equidigital number, since it uses as much as digits as its factorization.

145413161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 145413161 is about 12058.7379522071. The cubic root of 145413161 is about 525.8572974267.

The spelling of 145413161 in words is "one hundred forty-five million, four hundred thirteen thousand, one hundred sixty-one".