145635229 has 2 divisors, whose sum is σ = 145635230. Its totient is φ = 145635228.

The previous prime is 145635211. The next prime is 145635283. The reversal of 145635229 is 922536541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132480100 + 13155129 = 11510^2 + 3627^2 .

It is a cyclic number.

It is not a de Polignac number, because 145635229 - 2⁵ = 145635197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145635289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72817614 + 72817615.

It is an arithmetic number, because the mean of its divisors is an integer number (72817615).

Almost surely, 2^145635229 is an apocalyptic number.

It is an amenable number.

145635229 is a deficient number, since it is larger than the sum of its proper divisors (1).

145635229 is an equidigital number, since it uses as much as digits as its factorization.

145635229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 145635229 is about 12067.9422023807. The cubic root of 145635229 is about 526.1248492837.

The spelling of 145635229 in words is "one hundred forty-five million, six hundred thirty-five thousand, two hundred twenty-nine".