145675591 has 2 divisors, whose sum is σ = 145675592. Its totient is φ = 145675590.

The previous prime is 145675553. The next prime is 145675627. The reversal of 145675591 is 195576541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145675591 - 2⁷ = 145675463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145655591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72837795 + 72837796.

It is an arithmetic number, because the mean of its divisors is an integer number (72837796).

Almost surely, 2^145675591 is an apocalyptic number.

145675591 is a deficient number, since it is larger than the sum of its proper divisors (1).

145675591 is an equidigital number, since it uses as much as digits as its factorization.

145675591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 43.

The square root of 145675591 is about 12069.6143683218. The cubic root of 145675591 is about 526.1734489937.

The spelling of 145675591 in words is "one hundred forty-five million, six hundred seventy-five thousand, five hundred ninety-one".