146520233 has 2 divisors, whose sum is σ = 146520234. Its totient is φ = 146520232.

The previous prime is 146520203. The next prime is 146520239. The reversal of 146520233 is 332025641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108722329 + 37797904 = 10427^2 + 6148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146520233 is a prime.

It is not a weakly prime, because it can be changed into another prime (146520239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73260116 + 73260117.

It is an arithmetic number, because the mean of its divisors is an integer number (73260117).

Almost surely, 2^146520233 is an apocalyptic number.

It is an amenable number.

146520233 is a deficient number, since it is larger than the sum of its proper divisors (1).

146520233 is an equidigital number, since it uses as much as digits as its factorization.

146520233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 146520233 is about 12104.5542255797. The cubic root of 146520233 is about 527.1884257209.

Adding to 146520233 its reverse (332025641), we get a palindrome (478545874).

The spelling of 146520233 in words is "one hundred forty-six million, five hundred twenty thousand, two hundred thirty-three".