145689559 has 2 divisors, whose sum is σ = 145689560. Its totient is φ = 145689558.

The previous prime is 145689539. The next prime is 145689569. The reversal of 145689559 is 955986541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145689559 - 2²³ = 137300951 is a prime.

It is a super-2 number, since 2×145689559² = 42450895203228962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145689539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72844779 + 72844780.

It is an arithmetic number, because the mean of its divisors is an integer number (72844780).

Almost surely, 2^145689559 is an apocalyptic number.

145689559 is a deficient number, since it is larger than the sum of its proper divisors (1).

145689559 is an equidigital number, since it uses as much as digits as its factorization.

145689559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944000, while the sum is 52.

The square root of 145689559 is about 12070.1929976285. The cubic root of 145689559 is about 526.1902657114.

The spelling of 145689559 in words is "one hundred forty-five million, six hundred eighty-nine thousand, five hundred fifty-nine".