145408433 has 2 divisors, whose sum is σ = 145408434. Its totient is φ = 145408432.

The previous prime is 145408421. The next prime is 145408441. The reversal of 145408433 is 334804541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133102369 + 12306064 = 11537^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 145408433 - 2²⁰ = 144359857 is a prime.

It is a super-2 number, since 2×145408433² = 42287224775030978, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145408433.

It is not a weakly prime, because it can be changed into another prime (145408453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72704216 + 72704217.

It is an arithmetic number, because the mean of its divisors is an integer number (72704217).

Almost surely, 2^145408433 is an apocalyptic number.

It is an amenable number.

145408433 is a deficient number, since it is larger than the sum of its proper divisors (1).

145408433 is an equidigital number, since it uses as much as digits as its factorization.

145408433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 145408433 is about 12058.5419101979. The cubic root of 145408433 is about 525.8515980795.

The spelling of 145408433 in words is "one hundred forty-five million, four hundred eight thousand, four hundred thirty-three".