145361 has 2 divisors, whose sum is σ = 145362. Its totient is φ = 145360.

The previous prime is 145349. The next prime is 145381. The reversal of 145361 is 163541.

It is an a-pointer prime, because the next prime (145381) can be obtained adding 145361 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144400 + 961 = 380^2 + 31^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145361 is a prime.

It is a super-2 number, since 2×145361² = 42259640642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72680 + 72681.

It is an arithmetic number, because the mean of its divisors is an integer number (72681).

2¹⁴⁵³⁶¹ is an apocalyptic number.

It is an amenable number.

145361 is a deficient number, since it is larger than the sum of its proper divisors (1).

145361 is an equidigital number, since it uses as much as digits as its factorization.

145361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 145361 is about 381.2623768483. The cubic root of 145361 is about 52.5794413337.

The spelling of 145361 in words is "one hundred forty-five thousand, three hundred sixty-one".