145581433 has 2 divisors, whose sum is σ = 145581434. Its totient is φ = 145581432.

The previous prime is 145581431. The next prime is 145581503. The reversal of 145581433 is 334185541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105740089 + 39841344 = 10283^2 + 6312^2 .

It is a cyclic number.

It is not a de Polignac number, because 145581433 - 2¹ = 145581431 is a prime.

Together with 145581431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145581431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72790716 + 72790717.

It is an arithmetic number, because the mean of its divisors is an integer number (72790717).

Almost surely, 2^145581433 is an apocalyptic number.

It is an amenable number.

145581433 is a deficient number, since it is larger than the sum of its proper divisors (1).

145581433 is an equidigital number, since it uses as much as digits as its factorization.

145581433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 145581433 is about 12065.7131160989. The cubic root of 145581433 is about 526.0600597903.

The spelling of 145581433 in words is "one hundred forty-five million, five hundred eighty-one thousand, four hundred thirty-three".