145324237 has 2 divisors, whose sum is σ = 145324238. Its totient is φ = 145324236.

The previous prime is 145324199. The next prime is 145324241. The reversal of 145324237 is 732423541.

It is a happy number.

145324237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132572196 + 12752041 = 11514^2 + 3571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145324237 is a prime.

It is a super-2 number, since 2×145324237² = 42238267719264338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145324199 and 145324208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145324247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72662118 + 72662119.

It is an arithmetic number, because the mean of its divisors is an integer number (72662119).

Almost surely, 2^145324237 is an apocalyptic number.

It is an amenable number.

145324237 is a deficient number, since it is larger than the sum of its proper divisors (1).

145324237 is an equidigital number, since it uses as much as digits as its factorization.

145324237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 145324237 is about 12055.0502694929. The cubic root of 145324237 is about 525.7500836799.

Adding to 145324237 its reverse (732423541), we get a palindrome (877747778).

It can be divided in two parts, 14532 and 4237, that added together give a square (18769 = 137²).

The spelling of 145324237 in words is "one hundred forty-five million, three hundred twenty-four thousand, two hundred thirty-seven".