145612499 has 2 divisors, whose sum is σ = 145612500. Its totient is φ = 145612498.

The previous prime is 145612483. The next prime is 145612547. The reversal of 145612499 is 994216541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145612499 - 2⁴ = 145612483 is a prime.

It is not a weakly prime, because it can be changed into another prime (145612459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72806249 + 72806250.

It is an arithmetic number, because the mean of its divisors is an integer number (72806250).

Almost surely, 2^145612499 is an apocalyptic number.

145612499 is a deficient number, since it is larger than the sum of its proper divisors (1).

145612499 is an equidigital number, since it uses as much as digits as its factorization.

145612499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 145612499 is about 12067.0004143532. Note that the first 3 decimals coincide. The cubic root of 145612499 is about 526.0974762364.

The spelling of 145612499 in words is "one hundred forty-five million, six hundred twelve thousand, four hundred ninety-nine".