145549783 has 2 divisors, whose sum is σ = 145549784. Its totient is φ = 145549782.

The previous prime is 145549769. The next prime is 145549813. The reversal of 145549783 is 387945541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145549783 - 2⁵ = 145549751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145549483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72774891 + 72774892.

It is an arithmetic number, because the mean of its divisors is an integer number (72774892).

Almost surely, 2^145549783 is an apocalyptic number.

145549783 is a deficient number, since it is larger than the sum of its proper divisors (1).

145549783 is an equidigital number, since it uses as much as digits as its factorization.

145549783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 46.

The square root of 145549783 is about 12064.4014770730. The cubic root of 145549783 is about 526.0219344899.

The spelling of 145549783 in words is "one hundred forty-five million, five hundred forty-nine thousand, seven hundred eighty-three".