145727459 has 4 divisors (see below), whose sum is σ = 145808880. Its totient is φ = 145646040.

The previous prime is 145727453. The next prime is 145727503. The reversal of 145727459 is 954727541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954727541 = 349 ⋅2735609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145727459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145727453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37964 + ... + 41625.

It is an arithmetic number, because the mean of its divisors is an integer number (36452220).

Almost surely, 2^145727459 is an apocalyptic number.

145727459 is a deficient number, since it is larger than the sum of its proper divisors (81421).

145727459 is an equidigital number, since it uses as much as digits as its factorization.

145727459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81420.

The product of its digits is 352800, while the sum is 44.

The square root of 145727459 is about 12071.7628787183. The cubic root of 145727459 is about 526.2358898502.

The spelling of 145727459 in words is "one hundred forty-five million, seven hundred twenty-seven thousand, four hundred fifty-nine".