145724539 has 2 divisors, whose sum is σ = 145724540. Its totient is φ = 145724538.

The previous prime is 145724497. The next prime is 145724567. The reversal of 145724539 is 935427541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145724539 - 2¹¹ = 145722491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145724599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72862269 + 72862270.

It is an arithmetic number, because the mean of its divisors is an integer number (72862270).

Almost surely, 2^145724539 is an apocalyptic number.

145724539 is a deficient number, since it is larger than the sum of its proper divisors (1).

145724539 is an equidigital number, since it uses as much as digits as its factorization.

145724539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 145724539 is about 12071.6419347163. The cubic root of 145724539 is about 526.2323750263.

The spelling of 145724539 in words is "one hundred forty-five million, seven hundred twenty-four thousand, five hundred thirty-nine".