145515252 has 24 divisors (see below), whose sum is σ = 340552576. Its totient is φ = 48359808.

The previous prime is 145515241. The next prime is 145515259. The reversal of 145515252 is 252515541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145515259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13948 + ... + 22035.

Almost surely, 2^145515252 is an apocalyptic number.

145515252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145515252 is an abundant number, since it is smaller than the sum of its proper divisors (195037324).

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

145515252 is a wasteful number, since it uses less digits than its factorization.

145515252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36327 (or 36325 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 145515252 is about 12062.9702809880. The cubic root of 145515252 is about 525.9803324582.

The spelling of 145515252 in words is "one hundred forty-five million, five hundred fifteen thousand, two hundred fifty-two".