145158499 has 4 divisors (see below), whose sum is σ = 152798440. Its totient is φ = 137518560.

The previous prime is 145158493. The next prime is 145158521. The reversal of 145158499 is 994851541.

It is a happy number.

145158499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145158499 - 2¹⁷ = 145027427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145158493) 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, 3819942 + ... + 3819979.

It is an arithmetic number, because the mean of its divisors is an integer number (38199610).

Almost surely, 2^145158499 is an apocalyptic number.

145158499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

145158499 is a deficient number, since it is larger than the sum of its proper divisors (7639941).

145158499 is an equidigital number, since it uses as much as digits as its factorization.

145158499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639940.

The product of its digits is 259200, while the sum is 46.

The square root of 145158499 is about 12048.1740940277. The cubic root of 145158499 is about 525.5501401701.

The spelling of 145158499 in words is "one hundred forty-five million, one hundred fifty-eight thousand, four hundred ninety-nine".