145902233 has 2 divisors, whose sum is σ = 145902234. Its totient is φ = 145902232.

The previous prime is 145902227. The next prime is 145902247. The reversal of 145902233 is 332209541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75811849 + 70090384 = 8707^2 + 8372^2 .

It is an emirp because it is prime and its reverse (332209541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145902233 - 2⁴ = 145902217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145902196 and 145902205.

It is not a weakly prime, because it can be changed into another prime (145902203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951116 + 72951117.

It is an arithmetic number, because the mean of its divisors is an integer number (72951117).

Almost surely, 2^145902233 is an apocalyptic number.

It is an amenable number.

145902233 is a deficient number, since it is larger than the sum of its proper divisors (1).

145902233 is an equidigital number, since it uses as much as digits as its factorization.

145902233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 145902233 is about 12078.9996688468. Note that the first 3 decimals coincide. The cubic root of 145902233 is about 526.4461810527.

The spelling of 145902233 in words is "one hundred forty-five million, nine hundred two thousand, two hundred thirty-three".