145537799 has 16 divisors (see below), whose sum is σ = 168752160. Its totient is φ = 124478080.

The previous prime is 145537783. The next prime is 145537811. The reversal of 145537799 is 997735541.

145537799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145537799 - 2⁴ = 145537783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145537759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52697 + ... + 55389.

It is an arithmetic number, because the mean of its divisors is an integer number (10547010).

Almost surely, 2^145537799 is an apocalyptic number.

145537799 is a deficient number, since it is larger than the sum of its proper divisors (23214361).

145537799 is an equidigital number, since it uses as much as digits as its factorization.

145537799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2721 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 50.

The square root of 145537799 is about 12063.9047990276. The cubic root of 145537799 is about 526.0074972306.

The spelling of 145537799 in words is "one hundred forty-five million, five hundred thirty-seven thousand, seven hundred ninety-nine".