145717459 has 2 divisors, whose sum is σ = 145717460. Its totient is φ = 145717458.

The previous prime is 145717427. The next prime is 145717477. The reversal of 145717459 is 954717541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145717459 - 2⁵ = 145717427 is a prime.

It is not a weakly prime, because it can be changed into another prime (145717409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72858729 + 72858730.

It is an arithmetic number, because the mean of its divisors is an integer number (72858730).

Almost surely, 2^145717459 is an apocalyptic number.

145717459 is a deficient number, since it is larger than the sum of its proper divisors (1).

145717459 is an equidigital number, since it uses as much as digits as its factorization.

145717459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 145717459 is about 12071.3486818996. The cubic root of 145717459 is about 526.2238525872.

The spelling of 145717459 in words is "one hundred forty-five million, seven hundred seventeen thousand, four hundred fifty-nine".