145312530 has 48 divisors (see below), whose sum is σ = 383346432. Its totient is φ = 35226400.

The previous prime is 145312507. The next prime is 145312537. The reversal of 145312530 is 35213541.

145312530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145312530² = 42231462750001800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145312530.

It is not an unprimeable number, because it can be changed into a prime (145312537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16386 + ... + 23645.

It is an arithmetic number, because the mean of its divisors is an integer number (7986384).

Almost surely, 2^145312530 is an apocalyptic number.

145312530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145312530 is an abundant number, since it is smaller than the sum of its proper divisors (238033902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145312530 is a wasteful number, since it uses less digits than its factorization.

145312530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40063 (or 40052 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 145312530 is about 12054.5646955832. The cubic root of 145312530 is about 525.7359655450.

The spelling of 145312530 in words is "one hundred forty-five million, three hundred twelve thousand, five hundred thirty".