145530733 has 2 divisors, whose sum is σ = 145530734. Its totient is φ = 145530732.

The previous prime is 145530703. The next prime is 145530773. The reversal of 145530733 is 337035541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142134084 + 3396649 = 11922^2 + 1843^2 .

It is an emirp because it is prime and its reverse (337035541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145530733 - 2⁵ = 145530701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145530695 and 145530704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145530703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72765366 + 72765367.

It is an arithmetic number, because the mean of its divisors is an integer number (72765367).

Almost surely, 2^145530733 is an apocalyptic number.

It is an amenable number.

145530733 is a deficient number, since it is larger than the sum of its proper divisors (1).

145530733 is an equidigital number, since it uses as much as digits as its factorization.

145530733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 145530733 is about 12063.6119383873. The cubic root of 145530733 is about 525.9989843697.

The spelling of 145530733 in words is "one hundred forty-five million, five hundred thirty thousand, seven hundred thirty-three".