145559299 has 4 divisors (see below), whose sum is σ = 147553336. Its totient is φ = 143565264.

The previous prime is 145559279. The next prime is 145559311. The reversal of 145559299 is 992955541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145559299 - 2²⁷ = 11341571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145559279) 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, 996909 + ... + 997054.

It is an arithmetic number, because the mean of its divisors is an integer number (36888334).

Almost surely, 2^145559299 is an apocalyptic number.

145559299 is a deficient number, since it is larger than the sum of its proper divisors (1994037).

145559299 is an equidigital number, since it uses as much as digits as its factorization.

145559299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994036.

The product of its digits is 729000, while the sum is 49.

The square root of 145559299 is about 12064.7958540541. The cubic root of 145559299 is about 526.0333979574.

The spelling of 145559299 in words is "one hundred forty-five million, five hundred fifty-nine thousand, two hundred ninety-nine".