145589771 has 2 divisors, whose sum is σ = 145589772. Its totient is φ = 145589770.

The previous prime is 145589713. The next prime is 145589777. The reversal of 145589771 is 177985541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145589771 - 2¹⁴ = 145573387 is a prime.

It is not a weakly prime, because it can be changed into another prime (145589777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72794885 + 72794886.

It is an arithmetic number, because the mean of its divisors is an integer number (72794886).

Almost surely, 2^145589771 is an apocalyptic number.

145589771 is a deficient number, since it is larger than the sum of its proper divisors (1).

145589771 is an equidigital number, since it uses as much as digits as its factorization.

145589771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 47.

The square root of 145589771 is about 12066.0586356938. The cubic root of 145589771 is about 526.0701027492.

The spelling of 145589771 in words is "one hundred forty-five million, five hundred eighty-nine thousand, seven hundred seventy-one".