145206361 has 4 divisors (see below), whose sum is σ = 145231924. Its totient is φ = 145180800.

The previous prime is 145206343. The next prime is 145206377. The reversal of 145206361 is 163602541.

145206361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

145206361 is a nontrivial binomial coefficient, being equal to C(17042, 2).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104960025 + 40246336 = 10245^2 + 6344^2 .

It is a 3-Lehmer number, since φ(145206361) divides (145206361-1)³.

It is a cyclic number.

It is not a de Polignac number, because 145206361 - 2⁵ = 145206329 is a prime.

It is a deceptive number, since it divides R_145206360.

It is not an unprimeable number, because it can be changed into a prime (145206301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (36307981).

It is a Poulet number, since it divides 2^145206360-1.

Almost surely, 2^145206361 is an apocalyptic number.

145206361 is the 17041-st triangular number and also the 8521-st hexagonal number.

145206361 is the 5681-st centered nonagonal number.

It is an amenable number.

145206361 is a deficient number, since it is larger than the sum of its proper divisors (25563).

145206361 is an equidigital number, since it uses as much as digits as its factorization.

145206361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25562.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 145206361 is about 12050.1602064039. The cubic root of 145206361 is about 525.6078956968.

The spelling of 145206361 in words is "one hundred forty-five million, two hundred six thousand, three hundred sixty-one".