145473733 has 2 divisors, whose sum is σ = 145473734. Its totient is φ = 145473732.

The previous prime is 145473721. The next prime is 145473761. The reversal of 145473733 is 337374541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110628324 + 34845409 = 10518^2 + 5903^2 .

It is a cyclic number.

It is not a de Polignac number, because 145473733 - 2⁹ = 145473221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145473692 and 145473701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145473703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72736866 + 72736867.

It is an arithmetic number, because the mean of its divisors is an integer number (72736867).

Almost surely, 2^145473733 is an apocalyptic number.

It is an amenable number.

145473733 is a deficient number, since it is larger than the sum of its proper divisors (1).

145473733 is an equidigital number, since it uses as much as digits as its factorization.

145473733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 37.

The square root of 145473733 is about 12061.2492304902. The cubic root of 145473733 is about 525.9303027547.

The spelling of 145473733 in words is "one hundred forty-five million, four hundred seventy-three thousand, seven hundred thirty-three".